I have a limited understanding of FB but I know it involves "liking" and a wall and "favorites and such crappola. IT was this liking stuff I think a bud of mine had his laptop seriously infected. The story goes he used FB to connect to his nephew who isn't real computer bright.
The nephew apparently liked everybody, or something like that. Someone in his lineage was a scammer who put something up which was the infection so those upstream trusted it since it appeared to come from this silly nephew.
To make it short, I spent 3 hours disinfecting my bud's PC and the nephew threw his away, lol. Uncle learned a good FB lesson.
FWIW, I use a Norton utility which did the disinfection, this was after two other "experts" had failed.