Net Winner

http://jackpot.netwinner.com

Join Netwinner and win cash or points by playing a lottery-type game. Points can be redeemed for gift cards from Target, Home Depot, Bath & Body Works, Walmart, Barnes & Nobles and more, when a minimum of 25,000 points ($25) has been accumulated.

Members earn 500 points for each person they refer, as well as 10% of referral winnings. New members receive 1000 points. You must be 18 or older and from the United States or Canada (except Quebec) to join.

UPDATE: Netwinner might be a scam. I’ve read a number of complaints about members not getting paid for months or getting suspended for no reason. Some reviews can be found here and here. If you have any experience with Netwinner, feel free to leave a comment.