I have some presentations to make with people from different parts of the world and was trying to find a light, easy, no frills free environment to get together, brainstorm and outline a project.
I discovered Webcollaborator , which has just been launched, and I feel that until now it has satisfied my needs. It is a mixture of blog and wiki (which can be public or restricted) and allows you to to keep backups of every revision made, letting you see who made the changes and when. There is also an RSS feed built in ... so you just add it to your news aggregator and are instantly notified when changes or updates have been made.
Best of all...it is absolutely free for all uses and Lucas Carlson, the young creator, unfailingly helps you with immediate feedback whenever you get stuck. Way to go Lucas! Thanks for such a useful tool and your kind attention. Spreading the word around.