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"Following the completion of the World of Goo birthday sale, 2D Boy gathered up all the statistics it had from the \"pay what you want\" sale and connected them all into a big pile of interconnected info blobs. After the last stat update, when the developer revealed that many people were buying the game for one cent, something magical happened! The average price went up by a noticeable amount.Linux users were, on average, more generous with their purchase prices (maybe they offset the money they don't spend on operating systems?), and Swiss buyers were the most \"generous,\" according to a metric that compares average purchase price to a country's per-capita GDP. The most generous individual? One \"Stuart\", who handed over $150 for a copy of World of Goo!Meanwhile, the average purchase price for the WiiWare version was $15 -- because the sale didn't apply to that version."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.engadget.com/2009/10/26/a-world-of-data-from-the-world-of-goo-birthday-sale/>