Many are wondering how I am crossposting from Twitter to app.net. It is a dirty hack. Or more correctly, a dirty crack.
I found a session cookie security hole on app.net, and I am exploiting it to post to my app.net timeline from outside the website. This is also how I ran datebot.
Out of respect for dalton and crew, I am not making this exploit public (they say it will be plugged soon anyway).
If you are ambitious, you can find it as well. It took about 10 minutes for me to find.
Here's a hint, start by inspecting the Networking calls in a webkit inspector when you make a post.