I'm sorry if you interpreted my comment as nothing else than snarky. Truth be told, I want app.net to succeed, but as pretty much one of its target members (young, vaguely hip, and I love reading tech blogs) I still haven't found the answer to the following question:

What advantage does app.net have over the mainstream options if I don't care about privacy/'dickishness' and how is that worth $50 to me?