http://games.on.net/article/14492/Skyrim_Ships_10_Million_Copies_-_Smashes_Steam_Sale_Records
Quote: "Bethesda have let us know that as of today, the acclaimed role playing title has now shipped 10 million units across all three platforms. According to the press release, that figure represents "approximately $650 million in retail sales since its release on November 11".
To put those sales figures in perspective, Bethesda claim that in North America the PC version "outsold all other PC games by a factor of over three to one" in the month of its release."
At any rate we're showing Bethesda that PC gamers love their games, they've always supported the community with great mod tools. I'm hoping this sends a strong message to other publishers and studios that this kind of support can pay off bigtime.