Google Map Maker is a Google Maps service that allows you add or edit
features, such as roads, businesses, parks, schools and more. Using
Google Map Maker tools, you can visually mark locations and add
detailed information about these locations. Once you have submitted
content, this information may be edited by other users or moderators.
At a later time, this content may be published in Google Maps for
others to see and use.

Google Map Maker is now available in the 57 countries listed here:
http://www.google.com/mapmaker/mapfiles/s/launched.html

For more assistance with Google Map Maker, check out the Map Maker
User
Help:
https://sites.google.com/site/mapmakeruserhelp/

Please also visit the Google Map Maker Group:
http://groups.google.com/group/google-mapmaker

Cheers,
Your Google Map Guides