Well finally!!! God damn it I’ve been looking a long time for such an app, and here it is!
Fring is my new favourite. Just tested it a couple of minutes, but it seems to be working just fine, except for a little lag, but you just have to deal with it.
Download from Android Market or at Fring’s website for free and log in to your GSM, Skype, Google, ICQ, MSN, Twitter, AIM or Yahoo! account through Fring.
Still lack some testing against other mobile fring users, but that’ll be soon
Please add a comment about your experiences with Fring.