I also think you could have control plus one input device if the input device allowed you to assign a variety of “roles” to your “friends”. You could then put items out there and only let people in a particular role see those items. So in a dinner party with your work friends, you might remove certain items from the medicine cabinet but if it’s a dinner party with your “real” friends (here’s the difficulty with everyone being a “friend”), you’ll probably make different choices. I think the blog is a little different because no one has to be logged into an “environment” (other than a web browser) in order to see it. It’s much more public than environments like FaceBook or Flickr. But I think even with a blog, you could have an option about what is public and what is visible to which type of reader.

I think that as people use these social environments more, we are going to want to be able to control what’s presented in ways that more closely match the “real world”. I can envision a tool that has different channels–one for FaceBook, one for Flickr, one for Twitter, and so on–and that allows you to have a kind “meta-control” over how your persona is presented in these environments.