Your country: US
Reward types: money, gift cards and items
Cash out: Amazon gift card for a value of $5
No. of invites: continuously throughout installed software
Age to join: from 18 years and iPhone only
Comments: Amazon gift card of $5 if kept as an active member for only a week, additional credits every week, which can be redeemed for more gift cards from Amazon, your participation (for at least 90 days) will also be recognized with donating a tree.