How do you rate cashback shopping websites?

[broadband-engine]

Hi

I am considering totally changing the direction of www.ukshopsnet.com from a simple shopping directory to a directory of UK shops whereby Cash Back is offered on all purchases.

From the poll I want gauge if this is a good idea or not...

Cheers
Phil

[KGP]

although its off topic i would like to ask you how are you going to deal in accounting terms with your users in terms of giving them money back...