Pay-Per-View (PPV) ad networks for desktops offer advertisers a cost-effective way to drive traffic by paying only when their ad is viewed. These networks typically use pop-ups, pop-unders, or interstitial ads to display content directly to the user, making them ideal for lead generation, affiliate marketing, and offers that require immediate attention. Popular PPV networks for desktop include PropellerAds, PopAds, and Zeropark. Advertisers can target by keyword, URL, geo-location, and device type. Desktop PPV traffic often has lower costs compared to other channels, allowing for scalable campaigns. However, it requires careful targeting and compelling landing pages to ensure ROI. It's especially useful for testing offers in competitive niches like finance, gaming, software, and sweepstakes.