Networks

How do I connect my YM messenger to MSN Live? Is that even possible? hehe :) Most of my contacts are on YM, but I'm hardly on there. Usually I'm on MSN. Is there no way of connecting all networks to each other? Like, if I open Facebook I see all activities, say, on Yahoo, Hotmail, MSN, Youtube, Twitter, without having to log in on them all? *sighs*