| http://www.w3.org/ns/prov#value | - By entering a username, which can be a brand name, Internet identity, or vanity URL, KnowEm.com allows users to instantly monitor the availability of that username on over 120 popular social media websites such as Twitter, Digg, Friendfeed and even Sphinn.According to a release put out today for the KnowEm.com launch, a quick check using KnowEm.com reveals that some of the biggest brands in the wo
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