Hmm, what does this sound like? A threat from the Taliban to stop signing up to un-Islamic networks? =D
Absolutely wrong!
Facebook has always had its down-sides, and I recommend that you remove your account right away (I know it sounds ridiculous).
I deleted mine already thanks to my addiction towards the much-hyped site. Even though I am say sound like a Google diplomat, I think Google+ is something that you must switch to!