Can someone explain again;..What is the difference between NPD and VG sale.

[Dolla Dolla]

The difference is the sample size.

NPD collects close to 60% of the market.

VGC collects ...... less than 10%, I believe.

They do it through the same methods. NPD has a much larger network with paying customers, VGC is freely available from ioi who has contacts in the industry.