How does Facebook organize your chat list?

[ninnka]

How does facebook organize your chat list?

Hey guys! I've recently noticed one particular person I`ve written long time ago. I found it strange because he is constantly on the top of my chat list and it`s ages since I last spoken to him. I know that the order is either alphabetical or most of the time based on chat logs, but anyway is there any chance that he is looking at my profile? It may sound pointless, but it`s important for me.

[Ryu]

No, that has nothing to do with it. I tested this by using fake Facebook accounts. No correlation. Also on my personal Facebook, there are people in the top of my chat who don't even use Facebook anymore