Your country: US
Reward types: Cash
Incentives per survey: 1 to 5 US$
Cash out: from 1000 points (10 US$)
Number of invites: about 10 surveys in a month
Age to join: from 14 years
Comments: Product tests and online focus groups possible, with a much higher fee of up to US$50, as well as 5 to 50 points for each participation in a screener.