I am trying to understand how "cellphone submit" marketing works. I see many sites where it says "Win a free Ipad" or "Win a $1000 gift card", but only if enter my cell phone # and confirm a 4-digit code sent via SMS/text message. Usually this signs me up for a $9/month service like a free game, etc.. Few questions here regarding this: 1. How can I do this myself? Let's say I have access to a SMS/text messaging API where I can send people text messages. How can I replicate this and make money? Who will pay me out? 2. Do I have to have my own product/service in order to do the $9/month subscription? Or can is there companies/sites out there that will let me plug in their service? What's the easiest way to get started in this?