Google has released a new tool for US Google Maps users called “Google Map Maker”. Google Map Maker allows you to quickly edit US Google Maps. While online based maps have been available for years in the US, many countries still don’t have maps that are instantly available online.
Although Google is trying hard to map every country and make the data available online, it has not been able to be extremely accurate. This user driven approach allows you to edit areas in maps, and submit them for review. Each edit is reviewed completely, and if approved, they are added to Google Maps. According to Google, this feature has been used to generate maps for 183 countries and regions worldwide.
As of now, the feature is available only via a web based interface, but it should not take long for the idea to be ported to a mobile environment.