Good if you think the rewards are worth it
This was a promising site when I signed up to it a couple of years ago, with fairly regular surveys offered at a higher value than many other survey sites. I managed to get a £10 Amazon voucher quite quickly, then by the time I'd earned another the payment threshold had gone up to £25 which was still achievable.
But the threshold has continued to creep up. First to £50 and now £100. At this point, there's less incentive to continue answering surveys, with the achievable aims I'm interested in disappearing fast. I assume the company aren't making enough money to fund large amounts of Amazon gift vouchers any more, so have set the thresholds high to stop people ordering them. It's a shame.
However, if you see something you like among the rewards on offer, this is still a decent survey site. I'll try finding something else in the catalogue to aim for and use the shells I've earned. And if you prefer putting your efforts towards Amazon vouchers with low payout thresholds, I recommend trying Ipsos i-Say instead.