It pays on average $3.00 per survey. They email the survey to you and once it's completed you can recieve your money via paypal or a paper check in the snail mail. They mail the checks to you in the mail and you cash them at the bank.
It's called Pinecone Research.
http://www1.pineconeresearch.com/signup/RR523DS1.asp
This site is the Neilson company that is usually associated with the tv ratings but they also do surveys: