I signed-on to Facebook tonight and my newsfeed consisted entirely of posts by Conan O’Brien, who was live-Facebooking his show.  I was annoyed, and immediately “unliked” him.

If this had happened on Twitter, I would have probably read every post, and enjoyed it.  It took me a few minutes to figure out why I felt this way.  Ultimately, I decided that in my usage of these social networks, Facebook is for people I know, Twitter is for people I am interested in.