Hiya! I signed up in January, gathered points quickly and managed to get a £5 Amazon voucher soon after that. Must have been a fluke, because it's nearly impossible to get anything from their Marketplace! Have tried many times since then and only managed my second voucher today. The number of 'prizes' is limited and you can only redeem them at a particular day and time, so I guess you're competing with thousands of their users. And you can only claim one prize a week. Gener8 sounds groovy on paper but in reality doesn't blow your socks off...