Twitter is what people are calling a microblog. Basically you have 280 characters or less to complete your post. Then other can follow you and will be alerted each time you post (via desktop application, text message, etc...).
The Wiki Fire on Twitter
You can follow The Wiki Fire on Twitter and be updated each time a new article is created on the site. Now that the spam should be subdued, this should actually function fairly well, I hope. In fact, the creation of this page is really just a test of the new service.
UPDATE: this bot is like super broken.