Tweet Crunch

Twellow is the People finder directory for Twitter users and they have just recently released a new service called TwellowHood.
TwellowHood gives you a map that you can use to find fellow twitterers in your area. By simply clicking on the TwellowHood map, you can “drill-down” into a list of cities and towns in your area [...]

Twellow, a site from the producers of WebProNews is like a yellow pages for Twitter. If you have a Twitter account and post public messages then your account will be listed in Twellow.
 

Based on the content of your tweets Twellow will put you in a category, which will also make it easier for you to find [...]