mates is a location-based social networking system in the form of a robust web service, or Relationship Engine, and an optional rich media client application, or Relationship Space Navigator.

siehe auch:
- Hello.Wall
- Be Online
- Dein Freund soll auch mein Freund sein
- Freunde finden im Netz
- An Introduction to FOAF
- Google launcht Social Networking Site
- discussion around social networks
- Social Nets Not Making Friends
- The Heisenberg uncertainty of social network