[QUOTE=eth777;57555]Since skype is p2p, if I have it running in the background all the time, all the p2p connections will keep using the network, and eat away battery power right? QUOTE]

I think that even the PC client doesn't always act as a 'supernode' (as they call a p2p node). It is meant to be dependent on cpu and network performance, so hopefully that won't happen, but I don't know.

Someone should do a netstat while it is running, you'll see a bunch of connection to random addresses.