I become a fan of Wikimapia with in few minutes, after checking it! How easy to find out your desired location and can mark it with your own words if you wish! Being combined with Google Map, this site enables to browse any place in the world via web, without installing Google client side software. The picture below shows my sweet home using wikimedia!
The concept of "wiki" is to enable users to put their own text in site content, so being integrated with Google Map, it lets you to mark any area. However there are both ways for these marking provided by the users, as "Approved" which are voted by community users (and shown in white border) and "Non-approved" which are shown in yellow border.
I think this is really cool and waiting to get some more features and updates (more closer look etc).
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