A small thing at the bottom shows up saying Ad break, during this time you have to scroll up or down to find an ad and stare at it. Once you do a timer will start running from 6 seconds to 0. During these six seconds, you have to stare at an ad.
This isn't YouTube where we should be forced to watch an ad before a video. At least on YouTube you know that you're getting something in return cause you chose to click on a video.
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