I am a SWFL Twitter guy and think the application has a lot of use for local business. I recently came across this article

http://adage.com/digital/article?article_id=136662 and highly recommend you read it as it is a great example on how local business should use the application. With Twitter it is solely what the community wants, not what you want to get across and so long as you treat it as WIIFTOTP (what’s in it for the other twitter people…little long, I know) then you may have a winning strategy with being a user and a SWFL Twitter business.

Ray Higdon
SWFL Twitter Guy
http://twitter.com/rayhigdon