From meebo.com:

"We’re three folks working to bring IM to Web 2.0. Hopefully this lets you get all of your IMing done in one place and makes it easier too."

It's been around for some time, but haven't seen it posted here. It's really groovy. Got support for Gtalk 'n everything.

I've posted some screens [url=http://users.pandora.be/hoflackjp/nanaki/pics/meebo/]here[/url] for the lazy ones.