Ok so you're on BP minding your own business and you notice that you have some friend invites, so you check them and you notice they're from people you don't know and have never visited their pages right?
Well if you look closely to the message associated with the friend invite, you'll see words that comes from the person's page unless they write you a message directly.
What I think is going on is BP for some reason randomly selects users and automatically sends friend invites to random people. My guess is if I'm right they're doing it on the hopes of increasing communication between people on the BP network. The problem is I had gotten more then a few invites like that and when I hit the person back they were like what? I didn't add you. So what happens is I think they're playing games and they think I'm playing games, when all along it's actually BP playing games.
So BP if you want to be able to compete with other social networks like Facebook, stop playing games with your members that's going to push them away and step your game up and come up with something new that will attract people back to this network....and make sure when people receive invites, it's from someone who really wants to connect with someone else.