Yes! Farmville the very innocent, play farmer game on Facebook has a very active mafia. The members most of whom are females, kids and a few men, are taking over Facebook. Its very simple join Farmville or leave Facebook!

Initially I used to get routine invites, say 15-20 per day - when I regularly ignored their invites, they started sending gifts to lure me in but when these gifts were also ignored, I got emails asking me very politely, inbetween general conversation to join and 'help' the sender out in a very innocent game on Facebook known as Farmville and when I refused to join in one of my replies to these people, I got a phone call from one of the top bosses - "...join Farmville and become my neighbour". I was also very specifically told "...we do not need you to play Farmville, you just join, we'll manage the rest!"

HOLY CRAP BATMAN! I was shaking, shivering and shit scared to even log on to Facebook!

Today, after gathering a truckload of courage I logged on to Facebook, I had 178 requests to join Farmville and I wasnt even online for more than 20 seconds...I got a message, you've still not joined! Im sending you an invite join NOW! I quickly closed the window and am here writing this - if I disappear...its the Farmville Mafia!
I gotta go hide before they find me online!