Phewtick API

Phewtick is an iPhone/Android app that let users earn cash as they meet up with friends.

Yes, you didn't hear wrong. It EARNS you CASH$!

There is Phewtick-hack on Github that shows the API being used by the app. Using their very own API, you could automate the "meet-ups" and earn cash automatically. If only they could cash out in the end.