Last week I attended a web-based presentation by USGS on the National Map Corps. I don’t know if you are familiar with USGS’s National Map or not, but it is a great resource for finding and downloading information. I had not heard of the USGS National Map Corps before, so this was good news to me.
USGS has adopted the same editing environment for the National Map Corps that OpenStreetMap has used for a few years (Potlatch). It works well, is simple to use, and they use it to update a few features for the US Topo Map. The features you can currently edit across the US are: schools, fire, police, and EMS locations, state capitals, and cemeteries. Not a lot of features to update, but it is nice to see USGS opening up to crowd sourcing to keep features current and accurate. The updates you make on the map are reviewed by peers and then added to the new US Topo Map quads.
The URL for the USGS National Map Corps Editor is: