Quantcast shows that the number of unique visitors to Rap Genius has dropped 60 percent since Google punished the startup for its questionable SEO scheme. Last year, unique visitors to Rap Genius only dropped about 15 percent from Christmas Eve to Christmas. Rap Genius has not responded to request for comment from Valleywag sent yesterday and today.

A spokesperson for Quantcast told Valleywag that the traffic numbers displayed above are complete: "The reach data includes up through December 25th."

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[Image via Quantcast]