GeoTweeter automatically appends map links to your tweeted messages: configurable map icons show your followers not only where you are, but also what mood you’re in… Say even more about places you visit with an optional photo, notes and a star rating.

GeoTweeter also lets you tweet previously saved places – perfect for recommending favorite restaurants and bars on Twitter, or inviting your followers to tweetups!

http://appshopper.com/social-networking/geotweeter