I think some people have hundreds of friends they tangentially know or don't really care about. If at all inconvenienced they realize they're not interested in

I think some people have hundreds of friends they tangentially know or don't really care about. If at all inconvenienced they realize they're not interested in having them as a facebook friend anyway. Why anyone would bother with a study on a topic as trivial as facebook defriending still confuses me though.