Yep, so naturally if social media can help criminals, so can it help law enforcement catch the same criminals. Here's an interesting story which also highlights criminal stupidity.
Apparently, the thief, listed the Garmin Forerunner watch he had stolen from a home for sale on Craigslist. A man who wanted to buy the watch went and bought the watch from the thief. But when he tried to connect the watch to his computer, the new buyer discovered that the watch was registered to another individual.
After finding out the owner details that were listed for the watch's registration, using Facebook, the new buyer contacted the original owner of the watch along with four other individuals who had the same name. The victim of the burglary responded to the new buyer and also contacted the police. Long story short, the criminal was arrested and placed behind bars.
So, here's adding one more use for Social Media websites; Catching Thieves!