I've read alot of greet on this company.

You sign up and get on a wait list. The company will email you with an invite. Takes about a month or so to get your scanner.

The Good
People said they liked doing the scanning. It was easy for them to either call 1-800 or upload info on computer.
You receive token gifts from time to time as a thank you. Some received cash.
Scanning earns you points that you can redeem for merchadise.

The Bad
People said it took up too much of their time to do the scanning. To them it was not worth the time.
If you do not scan for more than three weeks, people reported that they received calls from colletion agencies, repeated calls from the survey company saying you would have to pay $300 for the scanner.
The merchandise you get for your points are not that good.
For some, they said it takes a long time to earn enough points for a decent prize.

Overall, if you have the time to do the scanning and don't mind doing that sort of thing, then you'd probably do okay. It's just time consuming and they ask for prices too. If the store you shop at is not on their list, you will have to manually punch the prices in, if I read correctly.

Hope that help a little.