It's a company called fb4money.info. They place ads on your Facebook page. They give a $20 sign up bonus when you sign up and qualify. To qualify you have to meet these few reguirements. -Are you apart of at least 10 groups
-Do you have at least 200 Friends
-Are you located in U.S Or Canada
-Do you have an ACTIVE ad's account (Not banned)
-Are you running any ad's currently
-Is your facebook account at least a year old 
And you need a paypal account and cellphone
If your interested use referral code KD1701 to sign up
http://fb4money.info