Friend request

This morning I was thrilled but puzzled to receive a 'friend request' on facebook from Bill Nelson. However we are already 'friends', and the profile picture was blank. I was suspicious and checked Bills fb page. This was obviously not 'our' Bill Nelson'. Keep an eye out folks, this could be a scam of some sort. Someone with bad intent picking up on the fact that I was likely to accept the request on auto pilot because of who it purportedly came from perhaps? It was only because I couldn't think of any reason why Bill would suddenly contact me personally that I didn't click accept without thinking.