MyOpinionNow

My Opinion Now is a site that has you fill out online surveys for points. Those points translate into cash.  Often, this site will send you full size products to try in your home and evaluate. I've gotten shampoo, body wash, air fresheners, food products and others. 

ClickIQ

ClickIQ is a survey site in which you earn points for each online survey you fill out. I have earned $100 from them. You can request payment through PayPal or via check. 

Synovate Global Opinion Panel

Synovate Global Opinion Panel is a mouthful, I know, but this site is worth your attention. Sign up for free and they will email you survey invitations.  By taking these surveys, you get to influence and learn about new products before they come out. Sometimes, they will even mail you a product (think shampoo, air fresheners, cleaners, detergent, food, etc) for you to evaluate. You get paid through points which you can redeem for cash (I've earned $125 and many free products over the years).  By completing surveys, you're also entered into sweepstakes for cash, gift cards and video game systems.