Wanted your own online collaboration space
It comes in different versions. There’s a paid version with all the bells and whistles and also a free version that you can sign up for at jotspot. Of course teh free version has limitiation such as the number of pages that you can create, but then again, there is no such thing as a free lunch!
There are plenty of free tools that you can install in your space like a blog, photo sharing, calenders, groups, etc. It is well worth a test drive. I think this is better than what Google is trying to do with thier Applications for Organizations, or whatever.