There’s a new kid on the block in the world of web-based messaging. Meebo brings Ajax (Web 2.0) and instant messaging together in a simple, clean interface. You can connect to your AIM/ICQ, Jabber/Gtalk, Yahoo! and MSN account simultaneously from your web browser, without the need for downloading or registering. It allows for setting your status, fetching contact info, and viewing your buddy list in a classic IM pane (made possible by Ajax!!). Check out their blog for more about the development of Meebo.