I know of meebo, in fact that is my current method of multi-chat. You see, I have installed Stuff-Plug NG, and added the web browser tab through it. Then, on the web browser tab, I log into GTalk through Meebo, and I am able to have both things open in one MSN Messenger thingy. However, this is ineffictive in that I don't get a notification when someone initiates a conv with me, and the chat windows can only be viewed when looking at the tab.
quote:
Unfortunately, MSN and G-talk contacts are not cross compatable as far as I am aware. You would have to forward your suggestion straight to Google, as they would need to work with Microsoft to make a "multi-Messenger"
In that case, a viable method would be to make a new tab for the GTalk contacts.