Spider Metrix
Australian owned and operated site that is open to members world wide. At Spider metrix you get paid for surveys and website ratings. It boasts a nice referral scheme and points are easy to get. 300 Points is redeemable for $50. Pay outs are by either Cheque or Paypal.
Have mucked around with Spidermetrix for a while, takes quite a while to get to 300 points.
I think it all depends on your demographics, some times I can get 4 or 5 surveys from them in a week or two then not hear anything from them for 4 weeks, that being said though, every time I reach payout they pay quite quickly and with out fuss.