if MS absorbs the Skype technology into their own IM/chat/communications systems - and skype users are left out on a limb - where do they go?.

They stay with the MS product line happily perhaps, or they go to __________?

gChat/open/xmpp? Jump all the way to Apple FaceTime (seems a far jump). Or with forthcoming p2p flash video ease-of-dev/ease-of-use, does this all just become super common/easy to access?