Sanford Wallace, the self-proclaimed "Spam King" who was responsible for a ton of spam messages on Facebook a few years ago, was sentenced to two-and-a-half years in prison. From 2008 to 2009, Wallace blasted people with a link to an external website that stole their log-in credentials and downloaded their friends' lists. He then spammed those users, stole their log-ins in order to spam their friends, and so on and so forth. Wallace accessed Facebook's computer network several times during that period to execute his scheme. In all, he was responsible for 27 million* spam messages on the social network. If you received any shady PM within that timeframe, it was probably from him.