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A9.com  
Above Sea Level
Acxiom

Adify 
ADM    
AdMission Corp.
ADP

AdPay    
Agendize       
allesklar.com AG

Amacai 

Ambassador Publications      
Amdocs, Inc.   
America Online 
Answer Financial Inc.  
ApproxiMATCH   

AT&T Yellow Pages

Auto Dealer Traffic

AutoTrader.com
BellSouth Advertising & Publishing

Berry Network  
Blinkx

Boston.com     
Business 2.0 Magazine

Business Week   
Call Genie

CallSource

Center for Citizen Media

Channel Intelligence

Charles the Photographer

CIBC World Markets

Classified Intelligence     
ClearChannel Outdoor   
Click Forward

Click2Discover  
ClickZ Network

CNET News.com

Coatue 
Comcast
Community Newspapers

Comscore

Comspread

ContactAtOnce!

Credit Suisse  
Creditwatch Services

DAC Group Digital      
Das Oertliche Marketing
De Telefoongids

Dean's Automotive
Deutsche Bank  
Deutsche Telekom Medien
Dex Media      
Direct West Publishers Ltd.

DirectoryM    
Dr. John A. Vellequette & Assoc.

Earthcomber

Earthlink Municipal Networks

Ebay

Edgeio.com

Efficient Frontier 

Endoxon AG    
Eniro Denmark  
Eniro Finland 

Entertainment Publications  
eStara

Eurekster

European Directories

Fast Search & Transfer

France Telecom

Frank Hardy Inc.

G5 Search Marketing, Inc.

GDMI

Genieknows.com

Google

GSD&M

Hawthorne Executive Search

HarvestINFO    

Hearst Newspapers      
HomeGain

Hostway Corporation       
HouseValues

Hummer Winblad Venture Partners
Hurrelbrink Advertising
i411

iCrossing      
illumiCell     
InfoSpace

InfoUSA      
inFreeDA       
Ingenio
Inman News

Innovectra 

Insider Pages    
Integrent      
Interchange / Local.com
Interland 

Investor's Business Daily      
ivantage       
JamBase

Jambo

Judy's Book 

Kanoodle  

Ketchum Directory Advertising

Knight Ridder Digital  

Krasilovsky Consulting

Leone Advertising  

LexisNexis Martindale-Hubbell   

LiveDeal.com   
LM Berry       
Local Matters

LocalEZE

LocalLaunch! 
Longworth Venture Partners

Macquarie Bank European Directories

MagicYellow.com

MapQuest
Marchex
Market Hardware
Marquette Group

Matchcraft

MediaTraks LLC

Medio Systems

MerchantCircle 
MetroFi
Microsoft 

Miva Media

Morgan Stanley      
MSN Communication Services

Mueller Medien

MYPS 
NeoMedia Technologies  
net-linx 

NewEra Strategies       
Nokia

Opus Research

Outrider North America

Pages Jaunes Groupe

The Paradise Yellow Pages

PCTest    
PlaceLinks     
Platefood 

PocketThis

PremierGuide 
PriceGrabber.com       
Profile America
Publicom SA - Telecom Argentina

Quigo

Red [City] Search Company
Red Herring

RR Donnelley

San Jose Mercury News

Sensis  
Service Ratings/ValueStar      
ServiceMaster  
ShopLocal   

SitePen   
Skyhook Wireless

Small Business Commandos

SMG Directory Marketing

soUno

Spot Runner 

Stanford Graduate School of Business   
StepUp Commerce

Sterck Kulik O'Neill Accounting Grp.

Stibo Graphic Software

Surulere Local Government

SV Investment Partners

Tango Group

Technology Crossover Ventures

Telcontar

Tele Atlas     

TeleListas Regiao 1    
TelID

TellMe Networks  

The Village Map

Thunderbolt Group
t-info GmbH    
TMP Directional Marketing 

Topix.net

Tribune Interactive      
Truveo

TruVideo

TurnHere.com   
U.S. Bancorp Piper Jaffray

United Online Ad Network

Valley Yellow Pages

Valpak.com     
Varetis Solutions      
Verizon
VIPOffers.com  
Vocento

Voicestar   

Wall Street Journal    
WAND, Inc.

Warburg Pincus   

WCA/MetroSIG  
Weblistic

WebVisible     
Wer Liefert was?

WhiteBlox

Whitepages.com

World Directories, Inc.

WPNI
Yahoo! Search Marketing 
Yahoo! 
Yahoo! Shopping
Yellow Book USA
Yellow Pages Association       
Yellow Pages Group Co. 
YellowPages.com
Young & Associates