The massive benefit for me is that all my friends are already on Facebook. It's effectively got automatic roster management, which is a killer feature since I don't normally get round to adding people to MSN (which is also the most popular client in my geographical area).
I reckon that because Facebook has such a large number of users already, this has the potential to kill the other IM networks. Maybe it's not so good for properly federated XMPP, though, since this also presumably means that Facebook have no real incentive to implement it.
I reckon that because Facebook has such a large number of users already, this has the potential to kill the other IM networks. Maybe it's not so good for properly federated XMPP, though, since this also presumably means that Facebook have no real incentive to implement it.