I applied with Referralcars.com to place a decal on the back window of my car and to get paid by commission based off this “passive income”. The only charge upfront was to pay $6.95 for shipping of the decal. While others had posted in a blog they received a decal in the mail, no money was ever earned. After trying to contact the initial person, Chana, no reply has ever been received other than to hurry up and apply before the offer ends. For an additional $15, you could also select to receive 80% commission rather than the original 60%.