If you're into finding different ways to get cash for surveys, then you should definitely try to get signed up for Pinecone Research. I recently posted about 2020 Research, which is in my opinion one of the best sites for getting paid for your opinion.
Pinecone is probably a very close second to 2020 Research.
How much does Pinecone pay?
They pay in points you can exchange for $3 per survey. I think some surveys only offer you sweepstakes entries, but you can elect not to take those. Your payment is made with either Paypal or check, and it gets sent to you within a day after the survey you took is completed, so no waiting forever on your money. If you have Paypal, I would highly recommend that option because the wait time is much less than it would be with a check. Since making the jump to points, Pinecone now has other options for redemption, too.
What are the surveys about?
Mostly products. Sometimes you'll get invited to do product tests on things that haven't hit stores just yet. These are really fun! Sometimes you get your $3 in addition to the product, which you may or may not be able to keep after you test it.
How long do the surveys take?
Survey length varies. I would be surprised if you ever had to spend more than 30 minutes on one survey though.
How do you get signed up to get cash for surveys with Pinecone Research?
Signing up isn't that easy. They do not always need applicants. Sometimes getting signed up involves hunting down their banner, which could be anywhere at any time. I share the sign-up links here when I know they are recruiting.
Can you refer friends to Pinecone?
Once you are a panel member, Pinecone may give you some invitations to send out to people you know. This is another way you can possibly get signed up yourself — hit up your friends for invitations if you know they are members. Or you could even ask around on various forums for invitations. I do not think there is any incentive given for referring your friends however.
If they do not accept you at this time, try again at a later date.