Great consise post! Writing conference wrap-ups sure is an art.

This is a great idea for re-evaluating my "stuff". I'm afraid to start, though, because this seems like just the kind of activity that I would use for endless procrastination. ;)

I agree about being able to block certain friends on specific networks. Some things such as last.fm I follow people to track their music taste but don't really care to see what they're doing all the time.

Another thing is being able to organize friends into identities from the first time I log into the application. It's not hard to combine someone's flickr with someone's twitter once they are in my stream, but for the people who are rarely in my stream it's quite annoying to still have to manage their identities months after I signed up and have been using the service. This is especially an issue when I'm using the iphone app. I wish there were a way to combine people's identities from a centralized management screen.