Writeboard

Doing my constitutional Blog-Around and stopped at one of my favourite sites - Backpack. 
37Signals - the people behind Backpack, Basecamp, & Ta-da lists, have recently released a wonderful collaborative writing tool called Whiteboard.

[Writeboard] is a web-based tool, with its unique URL making it accessible from any machine. Creating a whiteboard is as easy as entering the name you want to call your whiteboard, the password, your email and viola!, you have your own whiteboard. This is one tool I will find myself using a lot.

Write, Share, Revise, Compare.

Another wonderful simple tool for the complexities of life and things within.