Roy, I do understand where you are coming from but I also feel that though you are exposed to a buttload of crap (pun intended) on Facebook, you nevertheless have the power and ability to either digest it and absorb it or the other option... let it go.
Its mind blowing some of the games, meaningless talk, application and other things that we come across on facebook as well as the internet as a whole. But again, we still have a choice to either be affected by it or not.