I sometimes throw a YouTube video on the TV for some background noise (or for my cat :-) and if you're not paying attention, the ads can get incredibly long -- not just a few minutes, but 20, 30+ minutes.
Yeah, I got caught in one the other day because my gym uses YouTube for their music system.
Have also woken up to an ad that was hours long.
Not quite sure what the incentive is but maybe it works for some cases, sometimes I wonder if they're scam setups - sitting through a super long ad is a pre filter. Weirder things have been known for Internet scale.
