Two Main Categories
-
Same time/different place (real-time/synchronous)
- chat (e.g. IRC)
- action games
- MUDs
- A/V conferencing (rt-data sharing)
- shared objects (whiteboards, docs, ...)
- KeyWorx (patching, filesharing, streaming)
- Different time/different place (asynchronous)
- email/mailing lists/forums
- news
Hybrids apply, e.g. where does p2p filesharing fit ?