Facebook Facing doubts
Beginning from May 2012 Facebook has lost shares from $38 to $20. Michael Comeau of the financial website Minyanville says: "I'm fixated on the 268 million shares that hit in two weeks," he said. "Will there be enough buyers to satisfy the new supply?"
Facebook Friend Remover - 3 Reasons to Unfriend on Facebook

“You have a new friend request from …” and the confusion is started. Who is this person? Where do I know him/her from? Should I accept his/her request?
Many Facebook users turn to some Social Media Marketing Companies to buy friends, fans and likes on Facebook for their internet marketing promotion; so you may get such a friend request.
What to do After Your Facebook is Hacked

Millions of people use Facebook on a daily basis, and they consider it to be essential in their lives for communicating with family and friends and expressing themselves. If your Facebook account is hacked, it can be just as devastating as if your personal email is hacked. If you find yourself to be a victim, here’s what you should do as soon as you find out your Facebook account was hacked.