It is fantastic to hear ads that refer to questions you've answered, it validates the ad too. However many times you fill in demographics and find the survey is full or finished. I limit myself to 3 goes and then give up.
It took a a little while to find out how to redeem the cash I'd earned, now I'm waiting for the voucher to arrive as looking forward to buying a versatile griddle/ roasting pan/casserole dish that should be a great space saver when we venture off for adventures in our motorhome.