All in one messenger

There are many such softwares available, but the best that i have seen is pidgin, it is a wonderful piece of software which supports multiple platforms and has support for various chat services like yahoo,msn,gtalk,rediffbol,aim,icq etc etc..It has a great user interface and very easy to understand and configure.. you can download the software from www.pidgin.im its a very handy tool as it does not use much of the system resources,it is a very light program and you dont have to have a seperate yahoo messenger,msn messenger,google talk,AIM etc etc, its all in one!!!