http://www.AWSurveys.com

Very surprised by the sites ranks: Google-PR5 / Alexa-5558 / Compete-44961 / mozRank-6.52. They even give a $6 welcome survey. And the SCAM? Well they send emails and keep you in the loop till the time you reach payout levels. Then they stop the emails and you forget. They then delete your account saying "inactive for nn days". Ingenious black hat SEO!..