Social networking is a method to link communities of people together in some fashion, usually by software. The software, though varies from network to network usually gives users the ability to share and upload photos, videos and bookmarks, blog, message friends, link with or make new friends.
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Atlas is a free online mapping site where users can create high quality maps, embed them on a page in any size or format, allow readers to plot comments and photos on the map as well as map data from Google and Wikipedia.