I was spending all my money on 7search until I started tracking my campaigns with prosper202 and I found out what was going on, and I found out that all people who were visiting my site were from mobile phones, 80% of the people that come from 7search.com are from mobile phones, so if you are going to advertise something do it to mobile leads.. when using 7search and they don't have an option to filter those using mobile phones..