| BuddyPress(noun, service, website, internet, networking) |
| Buzznet(noun, service, website, internet, networking) |
| CONtv(noun, service, website, internet, networking) |
| CafeMom(noun, service, website, internet, networking) |
| Cake Financial(noun, expression, service, website, internet) |
| Camp Mobile(noun, expression, service, website, internet) |
| Canal Contemporaneo(noun, expression, service, website, internet) |
| Cancer In Common(noun, expression, service, website, internet) |
| Capazoo(noun, service, website, internet, networking) |
| CareTwo(noun, service, website, internet, networking) |
| Catfishing(noun, service, website, internet, networking) |
| Cellufun(noun, service, website, internet, networking) |
| Chechen Republic Online(noun, expression, service, website, internet) |
| Cheek'd(noun, service, website, internet, networking) |
| China Youth Returnee Association(noun, expression, service, website, internet) |
| Circalit(noun, service, website, internet, networking) |
| Cisco Eos(noun, expression, service, website, internet) |
| City-Data(noun, service, website, internet, networking) |
| City University of New York Academic Commons(noun, expression, service, website, internet) |
| Citysocializer(noun, service, website, internet, networking) |