I had 2 or 3 fake accounts. I didnt use for spam, most of the time i used those accounts for games, nothing else. However one day I offered somethin in a group. Maybe it was that?. I did it only once though.
Now here is the point:
Like 2 weeks ago Facebook gave me my account back (i sent my id and shits), however, 2 hours later my real account got disabled again. And I didnt even log in with my real account. Obviously I wrote them again straigh away to see what was happening. They answered me the next day and they told me it was a mistake and they asked my id again, but after almost two weeks they dont answer me.
However when i create another account, it get disabled almost straight away. I used proxys, TOR, I used different browsers (Firefox, Opera, Iexplorer, Chrome), I used WindowsXP and Windows7, I change my ip all the time and even so they disable them.
I hope it makes sense.