Is there a multi-protocol chat client that doesn't require a separate account?
IM apps that don't require an additional account tend to be few and far between on Android (in my experience, anyway), but so far I've seen two:


eBuddy - This does have an associated "eBudy ID" account that you can register for, but you're not required to do so in order to use other protocols.
IM+ (free, pro) - Same as eBuddy above. Another potential selling point is that the tablet interface is much nicer, IMHO.