Map maker allows anyone who has a Gmail account to edit Google Maps. Google Map Maker is a service launched by Google designed to expand the breadth of the service currently offered by Google Maps. In some countries mapping data is unavailable and to fill this void Google has decided to open up Google Maps to a collaborative community effort in certain territories.
Before adding features you must login to your Gmail account. Users are able to draw features directly onto a map where the borders have already have been drawn, and can add features such as roads, railways, rivers and so on. Users can add specific buildings and services onto the map such as local business and services.
Visit the Google MapMaker Page