He’s been amazed at the response to it. He’s gotten emails from all over the world. It went up Sunday. He wrote it in four hours using Ruby on Rails. People have been telling him it’s the most addictive thing they’ve seen lately. He finds that almost scary. But, I told him I am probably going to buy a third monitor just to display TwitterVision. It’s just so cool to see Twitters in real time from around the world displayed on a moving Google map.

Anyway, it was fun to hear how he built it. I told him that he should add Starbucks icons randomly in between Twitters. That would freak people out. Thankfully he graciously declined to do that.

If you’re on Twitter you can tell Twitter your location by sending a message with “L:” in it. After the L: you should include your zip code or some other location information that Google Maps will understand. I did L:94019 since that’s my zip code. You’ll see my Twitter messages popup from Half Moon Bay, CA.