Consumers
Partner Program
Login
News
Events
Webinars
Whitepapers
Infographics
News
2013
2012
2011
2010
2009
2008
May 16, 2013
RELEASE:
BlueKai Offers New Methodology For Ensuring Data Accuracy
May 13, 2013
As Sellers Take Their Data More Seriously, BlueKai Expanding Publisher Push
May 6, 2013
RELEASE:
New Online Data Offering Enables Advertisers to Target Audiences with Similar Behavioral Patterns as Category Shoppers
April 30, 2013
RELEASE:
BlueKai and Big Blue Team Up Within IBM's Digital Data Exchange (DDX)
April 22, 2013
Why Everyone From Publishers to Sports Leagues Wants to Be an Ad-Tech Company
April 16, 2013
Data Company BlueKai Targets CPG Advertisers With IRI Partnership
April 16, 2013
Data Company BlueKai Targets CPG Advertisers With IRI Partnership
April 16, 2013
RELEASE:
IRI and BlueKai Join Forces to Deliver Direct-to-Consumer Audience Platform for Greater Scale in Digital Audience Buying and Beyond
April 12, 2013
Velti And Bluekai Partnership Promising for Brands
April 12, 2013
RELEASE:
Velti and Bluekai Partner to Build Largest Pool of Mobile Data-Driven Audiences Available for Brands
April 11, 2013
MLB plans ad exchanges to target premium baseball fans
April 11, 2013
RELEASE:
Play Ball! BlueKai Adds MLBAM to DMP Lineup
April 10, 2013
How Do Data Companies Work With Clients?
March 27, 2013
RELEASE:
BlueKai Partner Program Expands Into New Channels; Reflective of Marketers' Need for Cross-Channel Data Intelligence and Activation
March 27, 2013
AFAIK: TapSense, SponsorPay, PaeDae, Univision, Yieldex, BlueKai, BlurbIQ
March 13, 2013
RELEASE:
TruSignal & BlueKai Release New High-Value Lookalike Audiences for Prospecting & Branding
March 7, 2013
Business Success Requires Memory
March 7, 2013
Cox Chooses Collective; Facebook Data Risk
February 27, 2013
New Ways to Reach The Right Audience
February 27, 2013
Facebook to Serve Up Ads Based on Your Offline Shopping Habits
February 26, 2013
RELEASE:
BlueKai Names Abe Taha Vice President of Data Science and Engineering
February 19, 2013
Shopzilla Formalizes Display Ad Business With Launch Of ‘Aisle A’ Division
February 12, 2013
BlueKai Named to Fast Company’s Top 10 Most Innovative Companies in Big Data
February 6, 2013
RELEASE:
BlueKai Named to Forbes' List of America's Most Promising Companies
February 5, 2013
This Week’s Burning Question: Big Data Vs. Creative
January 15, 2013
Illusions of Expertise: Why Marketers Should Start Listening to Data
January 04, 2013
Top 4 ways to build data strategy
January 03, 2013
Why data is more important than ever for 2013
December 25, 2012
Improved ROI, Marketing Efficiency Top Reasons Marketers Use DMPs
December 13, 2012
How to Drive Your Campaigns With Data
December 7, 2012
How Data Can Help You Land Top Talent
December 6, 2012
Survey Finds CMOs Growing Hip to Power of Data
December 5, 2012
Most marketers plan to use data management platforms
December 5, 2012
Big Data Platforms Valued for First-Party Data Collection Feature
December 5, 2012
What Brands Think About DMPs
December 5, 2012
40% Of Brands Using DMPs But Emphasize Internal Data
December 5, 2012
Brands using DMPs should reach a majority in 2013
December 4, 2012
Trending: BlueKai and the Rise of the DMP
December 4, 2012
40% of Brands Using DMPs But Emphasize Internal Data
December 4, 2012
BlueKai: Not Just a Data Warehouse Anymore
December 4, 2012
RELEASE:
New DMP Study: More than Half of Brands Adopt Data Management Platforms to Inform Cross-Platform Marketing Within The Next 12 Months
December 3, 2012
BlueKai: More businesses pushing into DMP to help across platforms
November 30, 2012
BlueKai Response to NYTimes article
November 27, 2012
Use of Tracking Cookies on the Rise as Advertisers Seek More Data From Web Surfers
November 27, 2012
Should publishers invest in audience data? Depends on the publisher
November 27, 2012
RELEASE:
Jumptap and BlueKai Partner to Break New Ground in Mobile Audience Targeting
November 14, 2012
Publishers Drop Twice as Many Cookies as E-Commerce Sites
November 12, 2012
RELEASE:
Data Management Platforms Poised to Deliver Scalable Solution to 'Big Data' Challenges, According to Iab & Winterberry Group
November 12, 2012
Can't Get Enough of Gangnam Style? Check Out AdTech Style
November 12, 2012
Ad Tech Parody Videos: An Appraisal
November 7, 2012
Data Management Platforms Are Everywhere – And At ad:tech
November 7, 2012
BlueKai Gangnam Parody: AdTech Style
October 8, 2012
RELEASE:
BlueKai, Alliant Announce Agreement to Offer Alliant Online Audiences & Exclusive Target Segments to Major Brands & Online Advertisers
September 25, 2012
BlueKai Solution Offers Mobile Brands Data
September 25, 2012
RELEASE:
BlueKai Activates Data Intelligence to Mobile Marketing
September 11, 2012
Data versus Algorithms in Digital Marketing
July 30, 2012
RELEASE:
Korrelate Shows BlueKai Data Predicts Offline Purchases
July 25, 2012
RELEASE:
BlueKai Announces Partnership With Datacratic to Bring to Market a Unique Look-a-Like Modeling Solution
July 18, 2012
RELEASE:
BlueKai Announces Launch Of First Complete Data Activation System For Data-Driven Marketing
July 12, 2012
INSIGHT:
The Death of the Data Warehouse and the Age of Activation
June 26, 2012
RELEASE:
BlueKai Names Cory Treffiletti To Executive Team For Marketing
May 22, 2012
RELEASE:
VivaKi Nerve Center, BlueKai Co-Develop New Data Platform
May 9, 2012
Carpe Datum (Seize the Data): Q&A With Grant Ries, CRO, BlueKai
May 8, 2012
BlueKai Demystifies Its Partners' Services With New Partner Program
May 8, 2012
RELEASE:
BlueKai Launches New Partner Program to Help Marketers Navigate the Growing Ecosystem of Data Solutions
May 8, 2012
RELEASE:
Cognitive Match Teams Up with BlueKai to Bring the Power of Data Intelligence to Better Inform Dynamic Creative Optimization for Marketers
May 2, 2012
BlueKai Pinwheels Data Connections
April 26, 2012
RELEASE:
V12 Group Selects BlueKai as Exclusive Data Management Platform (DMP) Provider
April 18, 2012
INSIGHT:
State Of BlueKai: CEO Tawakol On DMP And Exchange Strategies, Data Disruption, More
April 17, 2012
Verizon Exec Tries to Structure Media Around People, Not Content
April 17, 2012
INSIGHT:
Best Data Platforms Cut Through Clutter
April 11, 2012
BlueKai, Datalogix Partner To Leverage Purchase-Based Audience Data
April 10, 2012
BlueKai, Datalogix partnership marries big data with behaviors
April 10, 2012
RELEASE:
BlueKai and Datalogix Partner to Expand Purchase-Based Modeled Audiences for Brand Advertisers
March 20, 2012
RELEASE:
BlueKai Selected by AlwaysOn as an OnDemand Top 100 Winner
March 7, 2012
Rethinking The Online Ecosystem, Part II: Solutions To Publishers' Advertising Problems
March 5, 2012
What does a typical spring break traveler look like?
February 29, 2012
INFOGRAPHIC: These Are The People Who Go On Spring Break
February 24, 2012
Infographic: "Who Is the Typical Spring Break Traveler?"
February 24, 2012
BlueKai Unveils Who Is the Typical Spring Break Traveler
February 21, 2012
Who Loves E-Readers?
February 17, 2012
TruSignal, BlueKai partner for more targeted audience segments
February 16, 2012
RELEASE:
TruSignal unveils high value consumer audience targeting segments on the BlueKai Exchange™
February 13, 2012
RELEASE:
BlueKai Named to the 2012 OnMedia 100 Top Private Companies List
February 10, 2012
BlueKai Report Explains DMPs To Publishers
February 10, 2012
Publisher DMP Talk
February 9, 2012
RELEASE:
BlueKai Issues Report on Value of Data Management Platforms (DMP) for Publishers
February 9, 2012
INFOGRAPHIC: Who Buys eReaders? Gift Card Buyers & Dieticians
January 26, 2012
The User Data Ecosystem, Visualized
January 25, 2012
INSIGHT:
What Does a Super Bowl Fan Look Like?
January 19, 2012
We Have Seen Super Bowl Fanatics, and They Are...Golfers?
January 17, 2012
Whose Life Is It, Anyway? Consumers are learning their data is currency and new companies are betting they can help them cash in
January 12, 2012
INSIGHT:
Data Judging Data
January 1, 2012
INSIGHT:
Reading Data Tea Leaves
November 17, 2011
Who Buys Apple iPads? Rich, Male, Pet-Owning Geeks
November 17, 2011
Most Likely iPad Buyer Is a Male, Pet-Owning Gamer (Who May Be a Scientist)
November 9, 2011
BlueKai Explores Future Of Online Holiday Shopping
November 8, 2011
INSIGHT:
Why Silicon Valley Is Bucking The National Unemployment Trend
November 2, 2011
RELEASE:
BlueKai Growth Shows Increasing Adoption of Data-Driven Marketing Strategies
October 11, 2011
INSIGHT:
Removing the 'You' In Online Targeting
October 11, 2011
Removing the 'You' In Online Targeting
September 28, 2011
The Data-Driven CMO: 'No More Burn To Learn'
September 26, 2011
Tribal Fusion boosts targeting ability with BlueKai data
September 9, 2011
INSIGHT:
Data With Benefits
September 1, 2011
BlueKai rolls out new analytics platform
August 30, 2011
RELEASE:
BlueKai Launches Hub for Analyzing All Audience and Media Performance Data in DMP
August 30, 2011
Platform releases may simplify analytics, campaign planning
August 30, 2011
BlueKai Delivers 'Transactable Data' Through TrackSimple Analytics
August 9, 2011
The True Meaning Of 'Do Not Track'
August 3, 2011
Welcome To The Year Of 'Diverse Data Analytics'
August 2, 2011
BlueKai taps former Amazon, Yahoo execs as CMO, CFO
July 27, 2011
Largest Sharing Platform Partners With Largest Data Exchange to Deliver Social Audiences
July 25, 2011
What Data-Driven CMOs Need to Know to Truly Reach Their Audience
July 15, 2011
Study Compares Third-Party Trackers' Privacy Policies to Business Practices
June 29, 2011
RELEASE:
BlueKai Announces eBureau and interclick as Winners of Its Annual Data Champion Awards
June 28, 2011
RELEASE:
Largest Sharing Platform Partners With Largest Data Exchange to Deliver Social Audiences
May 26, 2011
Top Brands Data-Hungry For Online Ad Targeting
May 25, 2011
Rise of the DMP
May 24, 2011
RELEASE:
The Largest Marketers in the US Choose BlueKai DMP
May 24, 2011
INSIGHT:
Why the CEO of one of Seattle's hottest startups moved to Cupertino
May 3, 2011
Analyze Your Audience
April 25, 2011
A Crash Course In DMPs
April 25, 2011
Advertising Trends Worth Noting
April 21, 2011
RELEASE:
BlueKai TrackSimple® Offers Centralized Dashboard for Campaign Performance Visibility and Measurement
April 11, 2011
Intent Data For Spring
April 4, 2011
TRUSTe launches consumer privacy program
April 4, 2011
RELEASE:
BlueKai Becomes First Data PlatformTo Be TRUSTe Certified Under New Third-Party Data Collection Program
March 30, 2011
Explainer: The DMP
March 24, 2011
What's A DMP -- And Do I Need One?
March 15, 2011
Lead411 Launches "Hottest Companies in Seattle" Awards
March 1, 2011
RELEASE:
BlueKai Processes More Than One Billion Tags Daily
March 1, 2011
INSIGHT:
Omar Tawakol Answers Who Owns the Data at the 2011 IAB Annual Leadership Meeting
February 22, 2011
Data management platforms and why you need one
February 15, 2011
INSIGHT:
Forget Targeted Ads -- I'd Rather Pay For Content
February 14, 2011
Polk and DataLogix™ Extend Exclusive Online Automotive Partnership Through 2013
February 3, 2011
Will Data Provide The Fabric For Online Advertising?
February 2, 2011
INSIGHT:
5Qs With Jon Ingalls of BlueKai
January 28, 2011
BlueKai Enhances Data Management Platform With TrackSimple Acquisition
January 27, 2011
INSIGHT:
BlueKai CEO Tawakol Says TrackSimple Acquisition Completes DMP Stack
January 26, 2011
RELEASE:
BlueKai Redefines DMP: Industry's Only Comprehensive Data Management Platform for Marketers' & Agencies' First-Party Audience Data
January 26, 2011
BlueKai Buys Ad Data Analytics And Optimization Startup TrackSimple
January 18, 2011
Announcing the 2011 OnMedia 100 Top Private Companies
January 10, 2011
INSIGHT:
Q&A: Omar Tawakol, CEO, BlueKai
December 27, 2010
INSIGHT:
Madison Avenue In 2011
December 20, 2010
Branding's Bullseye: How DR Tactics Will Change Targeting
December 20, 2010
Branding's Bullseye: How DR Tactics Will Change Targeting
December 8, 2010
EBureau partners with BlueKai for online audience targeting
December 8, 2010
RELEASE:
eBureau and BlueKai Partnership Provides New Level of Targeting Precision at Scale for Digital Advertisers
December 3, 2010
Some Data-Miners Ready to Reveal What They Know
(Requires WSJ Subscription)
December 2, 2010
RELEASE:
Wayne D. Thorsen Joins BlueKai as Vice President of Strategic Partnerships
October 28, 2010
New program helps marketers extend keyword targeting beyond search engines
October 27, 2010
Is Targeting More About Audience Or Content?
October 26, 2010
BlueKai, Efficient Frontier partner for intent-based ads
October 25, 2010
BlueKai On New Search Engine Marketing Offering Through Efficient Frontier
October 24, 2010
Audience: New King of the Hill?
October 22, 2010
BlueKai And Efficient Frontier Bust Through Search Walls
October 22, 2010
DIGIDAY Data: BlueKai Partners With Efficient Frontier
October 21, 2010
RELEASE:
BlueKai and Efficient Frontier Partner to Extend Keyword-Based Targeting Beyond Search Engines
October 21, 2010
BlueKai Upgrades 'Intent'
October 19, 2010
Privacy vs. Profits
October 14, 2010
Agencies Tool Up for Data-Driven Media Buying
October 6, 2010
INSIGHT:
BlueKai CEO Tawakol Focused on Yield Management and Technology for Data Providers
October 1, 2010
Companies Reacting to Consumers' Views on Targeted Ads
August 27, 2010
IOs Are Eternal
August 11, 2010
Useless online metrics you might be tracking
August 2, 2010
Online Industry Needs to Be More Open About Tracking
July 31, 2010
Cookie Madness!
July 26, 2010
Blip.tv Develops Pre-roll That Offers Free Downloads on Other Devices
July 22, 2010
Rocket Fuel Inc. taps BlueKai for optimized data
July 21, 2010
RELEASE:
Rocket Fuel Inc. Finding Success Optimizing BlueKai Data to Boost Targeting Effectiveness of Online Display Campaigns
July 21, 2010
Real-Time Bidding and the RTB Ecosystem
July 21, 2010
Rocket Fuel Finds Low-Cost CPA Formula Through BlueKai Ad Data
July 8, 2010
Madrona's McAndrews on the future of media and advertising
June 16, 2010
4 tips for gaining trust from skeptical readers
June 15, 2010
RELEASE:
Bizo and BlueKai Partner to Deliver High-Performance Business Data on More Than 60 Million Professionals through the BlueKai Exchange
June 14, 2010
VivaKi CEO Hecht Talks AdECN Integration, Google/Invite Media, New "Primary" BlueKai Data Partnership And French Cuisine
June 10, 2010
RELEASE:
BlueKai's Pulse Report Shows Jump in Shopping for Gardening and Outdoor Entertainment Products and International Travel
June 9, 2010
RELEASE:
Glam Media Launches GlamAdapt–The Industry's First Third-Generation Ad Serving Platform Built For Brands–Bringing Emotion & Accountability To Display Advertising (PDF)
June 3, 2010
BlueKai Launches White-Label Registry To Promote Data Collection Transparency Says CEO Tawakol
June 2, 2010
Digital Content Today: BlueKai Launches White Label
June 2, 2010
BlueKai Extends Registry to Pubs
June 2, 2010
Given Data And Media's De-Coupling, Should A Data Company Be Selling Media, Too? – Day 2 Reactions
June 2, 2010
Advances in Audience Buying: What's Next?
June 2, 2010
INSIGHT:
Advances in Audience Buying: What's Next?
June 1, 2010
RELEASE:
BlueKai Launches Complimentary White-Label Consumer Registry
June 1, 2010
BlueKai Offers BT Opt-Out And Management Tool
May 17, 2010
RELEASE:
BlueKai Selects Netezza Twinfin Appliance to Power Reporting and Advanced Analytics
May 1, 2010
INSIGHT:
An Agency's perspective on privacy
March 29, 2010
RELEASE:
BlueKai's Pulse Index Shows Toyota Camry Loses Top Car Model Spot to Volkswagen New Beetle
March 29, 2010
CEO Tawakol Discusses BlueKai Pulse Index And Intender Signal Strength
March 12, 2010
Instant Ads Set the Pace on the Web
March 11, 2010
Who's the Next Google?
February 18, 2010
Affluent Consumers Spend Again
February 12, 2010
Digital Content Today: Blue Kai Shows Travel Recovery
February 11, 2010
RELEASE:
BlueKai's Pulse Index Shows Online Travel Intent Actions Rose Sharply in January
February 3, 2010
BlueKai CEO: Billions of Dollars in Online Ad Data
February 2, 2010
Got Funds? BlueKai Rakes in $21 Million
February 2, 2010
BlueKai Closes $21M Round Financing
February 2, 2010
BlueKai Secures $21M in Third Round of Funding
February 1, 2010
RELEASE:
BlueKai Closes $21 Million Round Of Funding
December 9, 2009
Transparency Renaissance At Digiday:TARGET
December 7, 2009
RELEASE:
BlueKai Launches First Analytics Service That Reveals Audience Shopping Behaviors
December 7, 2009
BlueKai Adds In-Market Analytics
December 7, 2009
Blue Kai Bows Data Targeting Service
December 7, 2009
Third Party Data Joins Up with Behavioral Tracking
December 4, 2009
Is Display Catching Up To Search?
December 4, 2009
Online Publishers Scurry To Solve Financial Woes
December 3, 2009
RELEASE:
MediaMath and BlueKai Partner to Deliver Enhanced Audience Targeting Across Ad Exchanges
December 1, 2009
Ram Access Mode: The Best Intenders
November 19, 2009
Digital Media Predictions for 2010
November 5, 2009
RELEASE:
BlueKai Pulse Reveals In-Market Shopping Insights Beyond Search With Industry's First Index of Consumer Intent Actions Across the Web
November 5, 2009
RELEASE:
Network Advertising Initiative Releases Consumer Opt-Out Protector
November 5, 2009
RELEASE:
John Sedlak Joins BlueKai Management Team as Senior Vice President of Global Sales
November 5, 2009
Target-Marketing Becomes More Communal
November 5, 2009
BlueKai Airs First Quarterly Report of Consumer Intent
November 4, 2009
NAI Beefs Up Consumers' BT Opt-Out Option
October 21, 2009
Ad Industry M&A Activity & IPO Wave To Hit 2010
October 16, 2009
Flavors of Search Retargeting: Google AdEx, Yahoo, and Beyond
October 15, 2009
Trick or Treat: The Word on Cookies
September 9, 2009
Transparency in Targeting
September 23, 2009
RELEASE:
Tribal Fusion Joins BlueKai's Premier Partnership Program
August 31, 2009
Data optimization drives media buy
August 25, 2009
INSIGHT:
User Empowerment, Not Regulation, Is The Answer to Privacy Concerns About Targeted Ads
August 17, 2009
RELEASE:
interCLICK Joins BlueKai's Premier Partnership Program
August 10, 2009
Bluekai Explain Their Data Exchange Platform And Hint At European...
August 6, 2009
BlueKai Data CEO Tawakol On New Certification Program
August 5, 2009
BlueKai Launches Certification Program
August 4, 2009
RELEASE:
BlueKai Launches Certification Program That Helps Marketers Establish Standard Definition for "In-Market" Online Audiences
August 4, 2009
BlueKai Moves to Certify Data Bought Through Its Exchange
August 3, 2009
OMMA Behavioral Post-Game: BT Gets Ahead Of The Curve
July 23, 2009
Surprise: Online Ad Prices Are On The Rise?
July 1, 2009
Advertising: The Price of 'Free' Media
May 31, 2009
Put Ad on Web. Count Clicks. Revise.
May 14, 2009
BlueKai Data Exchange Buyers Doubling Every Quarter Says CEO Tawakol
May 12, 2009
RELEASE:
BlueKai Data Exchange Raises the Bar with Consumer-Conscious Data Retention Policies
April 20, 2009
INSIGHT:
Why our revenue-sharing model is flawed
April 20, 2009
Will Using Behavioral Data Lead to Smarter Ad Buys?
April 9, 2009
The Data Dilemma
April 1, 2009
Filtering Out The Noise
March 31, 2009
Blinding Me With Science: Ad Optimizers
March 25, 2009
Your Online Clicks Have Value, for Someone Who Has Something to Sell
March 13, 2009
Is Opt-in The New Opt-Out?
March 12, 2009
A Guide to Google's New Privacy Controls
March 12, 2009
The Pace Of Technology Innovation Is Accelerating
March 11, 2009
Google Sidles Up To Behavorial Targeting
March 9, 2009
BlueKai, data targeting campaign
March 5, 2009
RELEASE:
Adconion Develops the Next Generation of Behavioral Targeting Powered by Integration with BlueKai Data Exchange
February 27, 2009
BlueKai captures data from 100 million
February 26, 2009
BlueKai Mines Purchase Data to Improve Online Advertising
February 25, 2009
RELEASE:
BlueKai Data Exchange Reaches 100 Million Unique Buyers and Becomes Largest Exchange of Online Commercial Intent
February 23, 2009
Start-up Mines E-Commerce Data for Online Advertising
February 1, 2009
Cookie Cutter
January 27, 2009
AlwaysOn Announces OnMedia 100 Award Winners
January 22, 2009
RELEASE:
BlueKai Named AlwaysOn OnMedia 100 Winner
January 20, 2009
2 simple ways to innovate during a recession
January 5, 2009
Six Online Ad Industry Predictions For The Year Of The Ox
December 16, 2008
RELEASE:
BlueKai Secures $10.5m in Funding Led by Battery Ventures
December, 16, 2008
BlueKai Makes Splash with $10.5M Round, Wants Advertisers to Understand Consumer Intentions
December 15, 2008
BlueKai Gets $10.5 million to help advertisers target shoppers
December 1, 2008
Media 100: A Seat at the Table (Omar Tawakol Named One of 100 People We'd Meet at Michael's)
November 18, 2008
INSIGHT:
iMedia Blog: Consumer Choice and Relevant Advertising – Beyond Opting Out
October 21, 2008
BlueKai, interCLICK Partner To Rev Up Online Campaign Results
October 15, 2008
RELEASE:
interCLICK and BlueKai Team to Deliver Optimal Campaign Results for Online Advertisers
October 8, 2008
Google Rallies Embattled Travel Marketers
October 7, 2008
INSIGHT:
iMedia Blog: Online Targeting Evolution 2.0: Can Data Stand on its Own?
September 26, 2008
INSIGHT:
Are you drowning in data?
September 25, 2008
The Era of the Data Exchange
September 19, 2008
AdWords retools, LinkedIn joins ad network frenzy
September 19, 2008
BlueKai Says Transparency for Everyone
September 18, 2008
Can anonymous information increase your bottom line?
September 16, 2008
Behavioral data exchange - a way to legitimize behavioral targeting?
September 16, 2008
All-Stars Launch Behavioral Exchange, of Sorts
September 15, 2008
RELEASE:
BlueKai Launches Online Industry's First "Polite" Data Exchange
September 15, 2008
New online data company BlueKai strives for quality, privacy
September 15, 2008
BlueKai Minds Its P's and Q's With New Data Exchange
September 15, 2008
BlueKai Focuses On Purchase-Driven Behaviors
September 12, 2008
Online ad twist: Mind your own data
September 12, 2008
Best Behaviour: Launch for 'Polite' Ad Targeting Firm
September 8, 2008
That's How the Cookie Crumbles