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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Harmony is the first service within the online dating industry to use a scientific approach to matching highly compatible singles. eHarmony's matching is based on using its 29 DIMENSIONS?? model to match couples based on features of compatibility found in thousands of successful relationships.