WikiMapps is a Brazilian website that allows anyone to create a collaborative Google Map. WikiMapps is from the same team behind the Brazilian crime map site Wikicrimes.
WikiMapps allows groups of people to share information about geographic locations. Once you have created a map other users can add comments to your mapped locations. For example, if you have created a WikiMapp about the best restaurants in a city other users can add their comments to your mapped locations. People can agree or disagree with your review of the restaurant or add extra information.
The site allows users to embed created maps in their own websites or blogs. WikiMapps also highlights the most popular and the most recently created maps on its homepage.