Any number of ways....You could buy traffic and send it to the affiliate link for Udimi. You can find traffic exchanges and advertise a banner, text, or url to their subscribers. What I suspect most of us do, is buy traffic here for a offer or program we are using. Once people join that program, they might ask or you suggest they buy from Udimi. I came here years ago, but just tonight a business partner recommend someone he buys from in Udlimi. That is our program got a good response form this seller, so shall use again. I know people which make $500 and more from those they have referred. Building a list that size takes time. It's just a numbers game, You share a business, they ask where can I buy traffic, Udimi is a secondary income stream.