I signed up with this online earning site called SociBuzz to be able to earn some extra moolah. You can sign up as an Advertiser or a Publisher. It's a new social media marketing ad network which provides weekly payments. All payments are made using Paypal.com with a $1 minimum cashout. Members can promote opportunities via Facebook, Twitter, and Tumbler. SociBuzz combines Social Media Marketing and Pay Per Click Advertising.
They also have a referral program wherein you get paid 5% of deposits made by advertisers you referred and 5% of earnings made by publishers you referred.
Please visit SociBuzz for more details about the program.