Replying to Reverse Friends List?

Just a completely random idea that popped in my head. I was reading through the forums and someone said something interesting so I clicked on their profile and I saw that they had me on their friends list. I have no idea who the person is at all, just another random NSer. This got me thinking... I think it could be cool to have a list somewhere of people who have you friended. So it's like your friends list, except reversed. I guess it's kind of pointless, but is kind of interesting at the same time.