This is a flowchart for determining if you should accept a friend request from someone on XBox Live. And I've got to admit, it's pretty spot-on. Of course, I don't accept ANY friend requests because I'm a loner. I even eat alone and, more often than not, have sex. You never seen a bigger bunch of concerned Wendy's employees!
Thanks to Grantly, who only accepts requests from people he knows in real life because he doesn't want to risk befriending a robot. Smart, Grantly, smart.