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Charles Caro Jul 10 '13 at 06:00 PM
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LinkedIn claims 225+ million members, but there are literally tens of thousands (perhaps millions) of "fake name" accounts, including any member account using a company name, which would be considered a "fake name" account because only a "natural person" can have a LinkedIn account.

The "typical" LinkedIn member spends less than seventeen (17) minutes per month visiting the LinkedIn website, which is much less time than the "typical" Facebook member spends at the Facebook website.

Even so the LinkedIn website is one of the top ranked websites based on traffic. For more detailed information on LinkedIn traffic take a look at the following:

http://www.alexa.com/siteinfo/linkedin.com
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    Bernard Gore Jul 11 '13 at 03:36 AM
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    Work in similar systems shows that typically at least 25% of accounts are fakes, duplicates or similar "un-real" ones. In some case this is as high as 75%.
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      Nyiko Mageza Nov 15 '13 at 08:40 AM
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      Is the number of accounts large enough for someone to conduct a test of the "6 degrees of separation" hypothesis?
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        Charles Caro Nov 15 '13 at 11:12 PM
        @Nyiko - With 259+ million members located literally around the globe there are surely enough people, but there are a couple of problems making a test of the "6 Degrees of Separation" impossible on LinkedIn.

        First of all, LinkedIn members are connected only through three (3) levels rather than six (6) levels.

        Second, LinkedIn's ability to keep accurate statistical data on the actual size of a member's full LinkedIn network is faulty.
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        Amama Sheikh Nov 18 '13 at 10:09 AM
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        I agree with you but I also realize that linkedin is one and only platform from where we can get the result. If 25% fake then so what 75% are professionals that is important.
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