Hmmmm, people (mostly PS3 fanboys) are complaining about a 4.7% margin of error? Do they know how statistics work? Do they realize that 4.7% error is barely more than Sony's current failure rate for 60gig PS3's (not to mention MS)?
Frankly, 4.7% is damn good for a free tracker with limited resources. If you just can't stand that, when dealing with limited sampling and diverse, volitile markets, adjustments will be made, then maybe this isn't the site for you.