Want between $5 and $20 US? Did you buy a music CD from a retailer between 1995 and 2000? Give this a go.
I hope they're legit. The music industry needs more of a prod to act like consumers matter.
On the plus side, they didn't demand my email address, so I didn't give it to them. That's one reason I'm inclined to believe they're not just creative info-collectors.