cool whiteboard app … but as one of the commenter’s said i think http://www.imaginationcubed.com/Imagine is better too
Clipped from digg.com
Amazing Flash Based Tool - Online Drawing & Chat

meebo but a cross site’s solution
Wieldy - web-based instant messenger network
The wieldy network creates a worldwide web-based instant messaging network which connects and intertwines communities across the internet. It allows users of one website (network) to contact users on another website (network) without needing to be associated in any way, other than having the wieldy […]

New Chat Prototype using Comet and Prototype
Chris Chabot has recently announced a new chat prototype based on a comet iframe connections for real time messaging, ajax for posting messages and sending commands, prototype.js and script.aculo.us as javascript framework, and bases of the newly written dhtml components.
As a side effect of this project, the library & […]