I have cross posted this so sorry if you see it on several boards.
Soo go check your pages and make sure you are not a fan of "win a free Ipad" or anything close to that.
Long story short my mom ended up the the group without knowing and so did I. I also think one of my friends got hacked from the group.
and on that note I would check those and your applications to make sure you only have ones you use (apps) or support (pages). if you aren't sure how to check
Pages:
Go to the info section on your profile and scroll to the bottom. Make sure to select "see all" so you can see all the groups
Apps:
In the top right corner click acct and select application settings.
From the drop down menu select authorized.
Check all the apps that have x's on the right and "x" out of all the apps you dont use. I would get rid of all the quizzes etc.

Love is like infinity: You can't have more or less infinity, and you can't compare two things to see if they're "equally infinite." Infinity just is, and that's the way I think love is, too.
Fred Rogers