What would be the top websites/companies that have earned the most from Google PPC? Does anyone know?

I think it is the forum sites, which had earned a lot through Google.In my best opinion it should be digitalpoint.They have massive traffic and good page rank, so there should have earned a lot through Google.

According to the Office of Tax Analysis, the U.S. individual income tax is "highly progressive," with a small group of higher-income taxpayers paying most of the individual income taxes each year.
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