Really??  But i still see ads related to them appear on the news feed. Facebook only makes big decisions to build up its reputation,  for me i do not worry from it. Theres a lot of reasons why facebook do that,  there is a scammers using twitter to scam from it.  Some other using bitcoin names and make a page on it, bitcoin is popular so some wants an information and they share it just to invest using thier page but that is not really good idea.
Scamers always find thier ways.