From the official Twitter blog:

A small business like a bakery will send out a tweet that the cookies just came out of the oven and a few dozen local followers will rush over and buy warm cookies. The customers like it and the small businesses owners love it. Big companies are using Twitter in interesting ways too.

You’d love that, wouldn’t you, Biz? If Twitter was used that way, it would be hyperlocal and worth ten times more than any guesstimate out there today.

The featured Best Buy mashup Twelpforce thing is pretty far from what you’re dreaming of above, Biz, but at least it is a step in the right direction.