Trendsmap displays Twitter topics by geographic areas on a Google map. Trendsmap uses the location set in your user profile on twitter.com to determine your location. The more accurate that is, the better Trendsmap can use your tweets.
Start with a view of your region where you can see the trending topics. You can scroll the maps by dragging to another area, or zoom in or out using the plus/minus icons. When you see something that looks interesting click on that topic for more information such as graphs of the volume of tweets locally vs. worldwide, what the topic is most likely about, images, links, and most recent tweets. You can also see where else this topic is popular by clicking on the topic within the detail display, or what else are people tweeting about at this location by clicking on the location name.