I found a handful of survey sites that truly do work. With each of these sites you do have to put forth some effort. Some you click a lot online, others you make purchases and record purchases. All of them give you a reward that you can then trade in for gift cards.
EarningStation: Ways to Earn Rewards – Search the Web, Take Surveys, ShopOnline, Buy Daily Deals, Watch Videos & Play Games
E-Poll Surveys: Sign up and be entered into the $1000 Monthly draw and take surveys with E-Poll to earn rewards.
MySoapBox: Register for a MySoapBox account to share your opinion and accumulate points that can be redeemed for prizes and gift cards for stores like Bath & Body Works, CVS, Lowes, Chili’s, and more.
OpinionPlus: Join the OpinionPlus Panel and earn points by providing feedback on a variety of different research topics especially matched to your interests and lifestyle.
PineCone Research: Sign up to take surveys and earn $3 per survey from Pinecone Research.
PointClub Surveys: Join PointClub to earn rewards for taking online surveys.
Survey Junkie: Sign up and take surveys to earn points that can be redemmed for e-giftcards from Survey Junkie. And… even if you do not qualify you still earn some points to be redeemed.