Is there a role for Twitter?

An interesting web 2.0 site that's the product of the moment is Twitter. It's like Sushi, the Greatful Dead, or skiing: You either like it or you hate it. Basically, you tell it what you're doing, and it posts it to the web, and sends it to everyone who is following you on twitter.

You can follow the movements of geek luminaries like Leo Laporte, or more main stream people like Steven Colbert.

I wonder if it would be interesting if a bunch of people posted what they were eating with their point values and what they thought about it ("Subway 5 points loved it", "Big Mac 20 points not worth it."). I'll start. Check me out here.