Quantcast, another web analytics service, estimates the monthly traffic to be somewhere between 250, 000 and 350, 000 visitors worldwide.

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Web analytics company Hitwise reports that Wikia Search's traffic is still too small to measure.

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Twitter Tuesday launched Twitter Web Analytics, which provides web publishers with much more information about traffic coming to their sites via Twitter.

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Web usage analytics software has been around for many years, giving publishers traffic data for their sites, yet this type of functionality has been extremely limited or non-existent for users of consumer social networking sites.

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Finally, The Next Web asks if StumbleUpon just passed Facebook for social media traffic: according to analytics service Statcounter, the site has surpassed Facebook to become the number one website for generating social media traffic in the U.S, accounting for 43.34% of the market as January 2011 commenced.

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