Internet Marketing/Social Media/Email
Apogee Search
Anchor Intelligence
AudienceScience (formerly Revenue Science)
BlueLithium (acquired by Yahoo!)
BrandPort
Bronto Software
BuzzCorps
Centro
CheckM8
Datran Media
MailKey
Mariposa Media
Media Two Interactive
MingleNow.com (acquired by Yahoo!)
NEWgame Communications
NetPlus Marketing
Permuto
Poptent
Port25
Potrero Media
SKYLIST (acquired by Datran Media)
SocialMedia Networks
Teracent (acquired by Google)
UnsubCentral
XLNTads

Industry Organizations and Events
Authentication and Online Trust Alliance (AOTA)
Email Sender and Provider Coalition (ESPC)
Emetrics Summit
The Golden Group (acquired by Jupiter Media)
Network Advertising Initiative (NAI)
Predictive Analytics World
TRUSTe
Web Analytics Association (WAA)

Enterprise IT Software
Astrum Software (acquired by EMC)
AVAKI (acquired by Sybase)
Cicero
EVault (acquired by Seagate)
HAHT Commerce (acquired by GXS Software)
Inquisite

Retail/Entertainment/Arts
Bickett Gallery
Moxie Kids
NBC
PAW (Positioning Animals Worldwide)

Government/Public Sector
Cúram Software

Philanthropy
AnimalKind
Communities in Schools
The Pet Foster Network

Mobile
Avesair (Acquired by InPhonic)
Mobile Marketing Association
RTP Wireless Initiative

Other
Grogan Associates
Sports Media Challenge