Steve 3.2 on 21 April 2007
I'd imagine weekly figures would be posted... uh... weekly! 
Otherwise, while it may be nice to have a comparison to the NPD stuff I don't think that's quite possible with them breathing down this site's neck. Additionally, while the NPD numbers are considered accurate, they're also only an educated guestimate and should be taken with a grain of salt as well. Unless you get data from all sources, there will always be room for error.
Numbers are like people. Torture them enough and you can get them to say anything you want.
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