I’ve noticed lately that when I chat with friends on Twitter it’s very fast!
If I ever have a quick question, I seem to be able to find an answer faster on Twitter than I can call up or email a friend to find out the same information.
General chatting also seems to be equally as fast. Whether you use Twitter via a web browser or a third party client, it’s very convenient and maybe you should drop your instant messenger altogether. 
Maybe Twitter will come out with webcam support soon, haha.