App.net is almost certainly doomed. Almost no-one believes that a Weibo-like communication service can run at scale other than by advertising or selling user information. I mean, it's not as though we pay for our data services, or our voice services, or for those stampy things.
App.net is a quixotic hopeless sad bit of misplaced nobility.
So, of course, I love it. Here's my app.net stream: johngordon on App.net.