Do you know that you can now set a frequency timing for vignette ads. To be able to maximized revenue generation from this, Google adsense is recommending a 1-minute cap per user per session.
This vignette frequency means you have the power to decide how long it takes before users can see another vignette. Adjust the frequency to manage how often users see a vignette on your site.
• For maximum earnings, choose the lowest frequency (1 minute).
• If you prefer fewer ads for your users, opt for a higher frequency (e.g. 10 minutes or more)