LOL, Yea, fanboys never fail to amaze.

NEVER!!!

sparkit -

NPD works by obtaining data from approximately 60% of US stores. They use this data, and extrapolate the rest for their monthly charts. Media Create and Famitsu report similar numbers as well.

NPD does make corrections once in awhile, but they do not report them. NPD has been wrong before, but some here tend to think that if NPD disagrees with their favored system, it's NPD's fault. NPD is right 95% of the time. There are errors, but I'd take NPD over VGC, since VGC tracks maybe 1/10th the retailers that NPD does.

That's not to say VGC is bad, but inaccurate compared to NPD at the moment.

I don't recall u "cynics" and "critics" to be so critical a year ago. You were all wide eyed nubile children, with unwavering innocence and monk like obedience...............................Yes Master (NPD).

dclKeeL -

Of course, the PS3 was beating the X360, and the Wii was so lofty that VGC had to constantly re-adjust upwards for the Wii.

But since December, VGC has been overtracking the Wii and PS3, so all the haters come out. This site has far more Nintendo and Sony fans than X360 fans, so guess who's gonna start the flame postings?

I think you're going to see some ugly Wii fans reactions to the next 3 months NPD.....

@mrstickball

Exactly my point.

We're outnumbered but not outperformed (360 users).

Thanks for that mrstickball.

I don't doubt NPD's accuracy above that of VGChartz (sorry Brett). It is just that with two of the biggest retailers in the country having in recent years decided to stop providing sales data to NPD, i would have expected NPD to report more corrections. Not having seen any, i was curious whether NPD even reported historical data.  

NPD's accuracy is the best. they are the only company that does this.

Toys R Us isnt big. I believe at the time of the switch NPD noted Amazon.com would likely be bigger in time. Hell Toys R Us is one of those retailers I half expect to go out of business anytime now.

Wal Mart of course is very big.

I'm pretty sure NPD tracks Wal Mart with a consumer panel of a lot of people (I want to say 30,000?) That shop at Wal Mart and track their purchases (not just consoles but everything down to socks) for NPD. Besides past data they would have for when Wal Mart was part of them...so they're doing a lot more than guessing Wal Mart sales..

It would be nice if Wal Mart would join NPD again and eliminate this problem..I imagine that would give them like 90% market coverage..