Hi all I'm kinda new to offline marketing, but I have an idea that I think could make a nice profit, supplying clients/leads to some of the local brick and mortar businesses around here. The only problem is... how do I track it? no websites are involved. The owners could easily "adjust" the numbers to their favor ("what? you only gave us 1 customer, not 150.. take 2 bucks!" and such things that would be hard for me to prove) So... any ideas? Thanks!