Where does this traffic come from?

We've partnered with a large ad network that has a combined 20,000,000 visitors a day through it's many websites. These websites are a combination of established websites in various niches, as well as expired domain traffic. When you purchase a traffic campaign, you are being displayed on these websites according to the category and the visitor targeting that you chose, until your target number of visitors is reached. Our traffic is PPV (pay per visitor) traffic; these visitors are being redirected to your website for maximum engagement, and an ad image and text is not necessary.