About a month ago, I wrote in this space about finally getting on Twitter... trying to sort out the hype from reality. Since then, I've been dabbling with a few posts a day, tweaking my list of people to follow, and trying to figure out what the killer app is. (Killer app is the application that makes the technology really take off.) This week, I think we have all found it: revolution.

On twitter, you can converse and follow topical themes by use of tags -- a "#" followed by a word. This week, the number one topic is #IranElection -- a revolution in progress that is being tweated and re-tweated in real time, from the streets, by the people, without media intermediation. Check it out.