MyBlogLog started this for bloggers in a big way. It can go much deeper.
I was visiting the kickapps office last week in New York and they are on to something big. I think WordPress, Google Blogger and Typepad could be the real launching pad for communities of the future.
If WordPress were to roll out kickapps feature set within their software, the real community building could start and get viral from the outside in (or inside out :) ) .
What a great trend unfolding here in social networking and community building on the net. Mucho money to be made here despite the noise. The winners will be gigantic.