IM/VOIP software isn't like email where you just need an option, unless your only use for it is for making out-of-network calls (e.g. Skype-to-phone). If all m

IM/VOIP software isn't like email where you just need an option, unless your only use for it is for making out-of-network calls (e.g. Skype-to-phone). If all my friends, all my colleagues, and all my clients are on Skype, then having an alternative doesn't help at all.