Seriously, if you're a criminal, it's probably best to keep your Facebook presence to an absolute minimum -- and most especially when committing a crime. An armed robber in Colombia found that out the hard way by failing to log off his account while robbing an internet cafe.

The genius and an accomplice sat down at computers in the cafe and proceeded to spend some time pounding the keys -- only to stand up after a few minutes, pull out weapons and demand that the clerk empty the cash register. Cops arrived after the two men had split with their take, but discovered that one had left his Facebook page up on the screen, enabling them to track him down easily.  Facebook him, Danno!