A lot of small websites try to monetize their sites with pop u ads but not manly website owners realize that they can also use pop up advertising to advertise their site and generate income. You can get human visitors through pop up advertising as your ad will be displayed when visitors click on the websites that used pop up ads. Pop-up ads work on a pay-per-view basis, meaning you pay for every 1000 views your ad gets. The cost depends on geo targeting and partner website as well as the ad network.