Puppyo! allows you to post messages which are tied to your current location, and read messages others have posted. You can view messages in three different radii around you: 50 meters, 1000 meters, and 5000 meters (all approximate). Use Puppyo! to attach your thoughts or reviews of a particular location, such as a restaurant, bar, park, or any other place on Earth! Puppyo! works best with the iPhone 3G with GPS.
Privacy Notice: Although Puppyo! is an anonymous public message board, it does maintain the geographic location of every post, and allows other Puppyo! users to view the location in the Maps application. For this reason, you may not want to post messages from your home or other private location, in order to maintain your personal privacy.
Check out the Puppyo! blog at http://puppyo.blogspot.com for more information.