Trendsmap [trendsmap.com] is yet another trend visualization project, with an (almost) real-time mapping of Twitter trends across the world. The interface is very minimal and easy to use: one can either follow a geographical region and explore the rising trends in that location, or one can follow a trending topic and observe the literally moving impact of the trend on the globe. Even though that it does not really show any content in my city (Linz) at the moment, it is a promising idea for the future. Thanks to the project for rising up the discussion about the benefits and problems of seeing the trends in my particular region.
Next to Trendsmap, there are several other Twitter trends data visualizations around. Most probably one of the best one is Twitscoop Tag Cloud. One can also check out the post about TwitterVision and TwittEarth, which also map Twitter messages on a 3D world globe.