<link broken at the moment>
Here is a little gem I whipped up:
Collaberative Magnetic Refrigerator Poetry
Work with other people on the Internet to form unique poems or just silly phrases.
It chooses a random color for each visitor. There is no locking of words so someone could steal a word you are moving. Every day or so one word is removed and a new one is added to mix it up a little. It only supports at most 10 people playing at once.
Have Fun!