Paid Surveys

Admittedly, many paid survey sites seem to be scams. Either they expect you to spend money, or they reward you with points that end up with next-to-nothing monetary value. There are a few that are worth the time, though. (Full disclosure: Yes, some of the link I'm providing are my referral links. If you'd like to use them, please do so! If not, you can always go directly to the main page.)

Opinion Outpost
Use a point system with each point being equal to $0.10. They add up fast! You can redeem the points for cash or an Amazon gift code. I chose the Amazon code and got it immediately. I like this one!

Greenfield Online
Some of their surveys are paid and others offer entries into their reward sweepstakes. They tell you beforehand what the compensation will be and about how long the survey will take. I haven't requested payment from them yet, but they're considered to be a reputable site.

e-Rewards
They don't pay cash, but allow you to choose rewards. Some rewards are better than others, but I've found quite a few that I like. I've earned over $100 worth of rewards without even filling out surveys regularly.

Pinecone Research
I finally got a link to join yesterday and am still waiting for my approval. This is considered to be the best online survey site and I've heard only good things about them. They don't actively accept applications, though. You have to be lucky enough to get a link from someone or stumble upon one of their ads. If/when I'm approved I'll post referral links.