Internet Marketing/Social Media/Email
Adara Media
Apogee Search
Anchor Intelligence
AudienceScience
BlueLithium (acquired by Yahoo!)
BrandPort
Bronto Software
Buysight (formerly Permuto)
BuzzCorps
C3 Metrics
Centro
CheckM8
CompassLabs
Datran Media
HookLogic
MAGNETIC
MailKey
Mariposa Media
Media Two Interactive
MingleNow.com (acquired by Yahoo!)
NEWgame Communications
NetPlus Marketing
Poptent
Port25
Potrero Media
PreferenceCentral
PulsePoint
Questus
SocialMedia Networks
Teracent (acquired by Google)
UnsubCentral
XLNTads

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

Organizations and Events
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