If you want to see a very interesting use of Twitter, take a look at:

http://twitter.com/search?q=#jazzlives

One of the problems facing the jazz community is that it is a niche interest that is pursued in an extremely dispersed fashion.  The lifeblood of jazz is the clubs and other live venues, but that doesn't offer an obvious to tie keep the community together.

A hometown Chicago jazz authority (Howard Mandel) came up with the idea of tweeting any time you see a live jazz performance - name of artist, venue, and #jazzlives.  You can read about the inception of the Twitter campaign here.

Just look at the action surrounding the Chicago Jazz Festival!

This gave me some real insights into how Twitter can be meaningful in special situations.

Has anyone else seen a Twitter campaign that made you say "Aha!" ??