In fact, Facebook allows to differentiate between friends and connections using friends lists. It's even possible to restrict certain content to some of these l

In fact, Facebook allows to differentiate between friends and connections using friends lists. It's even possible to restrict certain content to some of these lists. What Facebook does not do - and I believe for a good reason - is to make these lists public. It's awkward enough when friends drift apart (which is something that I guess has happened to everyone), but nobody would want to be the first to reset a friend to a connection. So the system just would not work.