Has anyone tried popunder ads for monetizing their website? Would love to hear tips or recommendations.

Hey folks! I stumbled across popunders while reading a marketing forum. I was curious about alternatives to banner ads and wanted something less aggressive for my audience. The site explained everything clearly — how ads appear behind the main window, how to control frequency, and which traffic types work best. I implemented a small test, and the data gave me a better sense of what formats suit my site without annoying users.