That's my actual referral code.
As stated it's currently in Beta stage, so improvements and updates and more deals are likely coming in the future. It has been released since early November 2012 and has gotten over 1000 downloads so far(in 2 months) with an average rating of 4.5 on Google Play.
The minimum payout or withdraw amount is $3 (previously $5). You may get credit for the referral once a person joins, but you cannot withdraw that referral credit until that person has made their first withdraw. This is a smart requirement method by the designers/developers so that your referral counts only when a person really joins the app, not just install the app. Just make sure you know what you are trying out or signing up for. Some of the offers are cool and interesting.