WRatings Consumer Panel – formerly known as Kanbay Research, adjoined research or demand3d.
Amazon gift certificate, usually $5.00.
Couldn’t find specific information on their website, I would assume it’s 18 year and older.
Open to Countries
I believe WRatings accepts members from United States and possible other countries.
WRatings usually sends out pre-qualify surveys at the beginning of the month, and you might get to do 2 to 3 surveys later the month if your profile fits their studies and you are selected to participate in the surveys. Each survey they pay $5 amazon gift certificates.
WRatings offers surveys that are short and sweet and very interesting, and they always pay in a timely manner.