It would be great if you could create and manage a Facebook group. I feel that managing the web and the applications is just about the maximum I can handle myself. It does not need to start big, but I am sure over time, people will join.
Regarding the "look at my cursors" topics, there are now the blogs/micro-blogs, so I hope people will start using them more to talk about what they are doing or have done. With latest blog posts on the main page and (hopefully) soon to come subscriptions to user blogs, it should become easier to track what is happening on the web.
Twitter integration looks like a good idea, but I cannot say when I am able to get to it.