Hi,
I'm currently floating this idea around a few places and thought people here might be interested. We're trying to get together a small group interested in starting a hosted web apps co-operative where the key principles are openness and using entirely free software to build and run it.
Initially we're probably going to target e-mail, calendaring and rss but this is open to discussion. The entire idea is open to discussion and the purpose of this now is to get together a group interested in discussing this and taking it forwards. I think it could be financially very reasonable for a group as small as 10.
If you're interested in becoming involved with something like this feel free to reply to this thread or contact me of list. The next step will be cc'ing together an interested group where will begin figuring out implementations etc...
Best wishes,
Jonathan Roberts