OpenStreetMap US is organizing another nationwide edit-a-thon (http://www.openstreetmap.us/2013/03/april-spring-editathon/), so come out and map to improve the US map data!
We can fix street network data, fix errors, add POIs, and more. If you're new to OSM, we'll have plenty of seasoned vets there to show you how to become more proficient at editing using several different tools.
Let's meet up at the Broadway Deli in downtown Dunedin. We might even be able to sit outside if the weather cooperates.