Here's a pro tip: when on the run from the police, and you really need to access Facebook to play Mafia Wars because you're a real life mafia boss, then it's a good idea to hide your IP address via proxy to avoid getting caught. Okay, we jest about the Mafia Wars part, but the rest of it is true. Seems the said mafia boss in question was using Facebook to send out coded instructions to his cronies and to also socialize and got caught when policed tracked down his IP address.
abcnews.go.com - One of Italy's 100 most-wanted criminals, a vicious mafia boss who had been on the run for months, was betrayed by his passion for social networking and flushed out thanks to Facebook. Using the name "Scarface" from the gangster movie starring Al Pacino, Pasquale Manfredi, 33, a boss of the the ferocious 'Ndrangheta mafia organization from the Calabria region in southern Italy, had logged on to his Facebook account so often that police were able to trace the signal from his Internet key and find his hideout.
Full story here.