As of right now, the App.net page on Facebook has 74,066 likes. I have a feeling that a lot of those people will jump on board if it's anywhere close to the goal in the last few hours.
The biggest problem with app.net right now is its diversity.<p>The 40 members shown in the App.Net community section when I went to the Join page are ALL 20-40 year old, white males. Not a single female or non-white.