I suppose it's not that strange that this data was aggregated intelligently from status updates.

I do wonder, though, the number of lists and data collections like this that are assembled and we are not told about. Not that I resent it, exactly, I know the terms I joined the network on — but it is a little unnerving to think just how many ways such a huge trove of data could be mined - weekly popularity lists for books, movies, etc. Makes me wonder why Facebook bothers advertising when they have the most powerful and targetable polling tool in history available to be gated off for a price. Maybe they're already doing this and I just don't know.