It's better to do it on the app than on the site. Doing it on the site is a mess, but it also doesn't require you to watch the whole video. Usually it just makes me watch the ad before the video starts and it'll still credit me and I'll move onto the next one. It's annoying because you have to move onto the next video yourself tho, while the app just streams on its own.
I was coming home waiting at the train and across the platform on the other side, this teenage couple were literally dry humping and laying on a bench making out, like