I often go to YouTube to find teardowns and repair instructions. One thing I have run across is this niche where some guy out gal repairs something very slowly, over the course of an hour or two, with the mic gain cranked way up even though they say absolutely nothing the whole time. When I look at the channel, all the videos are the exactly the same and they have very high subscriber counts. I genuinely can't imagine who is watching these and why. But they must make a ton of money on the ad revenue.