Hacking Foursquare: Taking over the White House...from North Carolina (chronline.posterous.com)

I especially like the anecdotes about people who get so offended at "stealing" mayorships. I did something similar last fall, but didn't make an automatic script. Just made a series of buttons linked to various venues, and instead of actually going out I clicked a button. It's the perfect way to look really social when you don't feel like being it.

This is the problem with "check in X times and get this deal" type of specials. There's no good way to check the integrity of a check in, by design.