No information given. Of course, not all the videos in the vod section are commercial, but they are unapologetic for doing porn. 793 of the 8,365 videos, or 71.35%, are porn; the rest, 1,065, or 28.6%, are unapologetic non-porn videos. It seems that one thing YouTube wants the audience to do is keep watching porn videos, which in turn encourages more advertisers to put ads in those videos. While they've improved on the animation quality since the beginning of the paywall, it's not a perfect solution.