The Foundary is another new daily deal site, but this one has a twist. Refer your friends to TheFoundary.com and earn $1 per friend who signs up! (Up to $50). This is a nice deal since most sites require your friend to make a purchase before you earn any credits.
In addition, you will receive $20 per friend that makes a purchase and $1 for each additional purchase. After you sign up, you will be given the opportunity to send an email to your friends inviting them to join. Be sure to let them know that it is FREE to sign up!
It looks like many offers are sold out right now, but there will be new offers regularly.