| social media(noun, expression, communication, information, society) |
| hospitality service(noun, expression, service, website, internet) |
| ANobii(noun, service, website, internet, networking) |
| ASUIsTalking(noun, service, website, internet, networking) |
| ASmallWorld(noun, service, website, internet, networking) |
| ActivityPub(noun, service, website, internet, networking) |
| AdamForAdam(noun, service, website, internet, networking) |
| Advogato(noun, service, website, internet, networking) |
| Affinity Labs(noun, expression, service, website, internet) |
| Airline social networking service(noun, expression, service, website, internet) |
| AlbumTwo(noun, service, website, internet, networking) |
| Aligned Signs(noun, expression, service, website, internet) |
| AlterGeo(noun, service, website, internet, networking) |
| Alumniportal Deutschland(noun, expression, service, website, internet) |
| Ameba(noun, service, website, internet, networking) |
| Amen(noun, service, website, internet, networking) |
| Amie Street(noun, expression, service, website, internet) |
| Amina(noun, service, website, internet, networking) |
| Amunzi(noun, service, website, internet, networking) |
| Anonplus(noun, service, website, internet, networking) |