Springboard America Review
Availablity: United States
Springboard is available to US residents only. They offer fairly generous rewards per survey and a variety of cash out options including PayPal and Amazon. However, cashout minimum is $50 so you'll have to be patient.
Referral Program: $2 for each referral that takes a minimum of 2 surveys their first month
Index:
SurveySavvy | ClixSense | InstaGC | SwagBucks | PrizeRebel | YouGov | PaidViewpoint | BrandedSurveys | MyPoints | Springboard America