Just a note -- I was in the same boat as a lot of you -- I would see all the posts on the "Mafia" games, read some of the thread, not get it, and go back to the General/Science Forum. Then, either Wastrel or Mike talked me into trying out the "Lost" Mafia, and it was a total blast. Challenging, logical (at times), and fun.
1. You'll pick up the rules of the game quickly, particularly by playing it, and
2. If we engage you enough on the "regular" boards such that you're challenged, you'll love the Mafia games. You're not going up against rubes or TBs, you're going up against fellow critical thinkers.
Have fun, and GIVE IT A SHOT!