Google Maps is crowd sourcing business and location data. I wonder if YouTube couldn't do the same, rewarding (like Maps does) YouTube Red subscriptions for enough effort.
Then they could have more granular controls in clients, like saying "Block videos where at least half of the crowd say there is sexual content".
I'm starting to like this idea better. It's at least an approach that isn't yet a proven failure. You can probably get some mileage out of weighting reliable users more heavily than randos, being smart about what thresholds constitute sufficient evidence, etc. Existing systems are definitely good at that sort of thing.
The problem you might have is that most who search for terms that would bring up similiar results will have a vested interest in sexual content and will produce false flags
I didn't say banning content. I suggested categorization. Like the categories in the detailed MPAA breakdowns ("violence", "sexual content", "language", etc.).
Maps asks more opinionated questions as well. YouTube alternatives would include "Good for kids", "Funny", "Good on a small screen", and things like that.
Then they could have more granular controls in clients, like saying "Block videos where at least half of the crowd say there is sexual content".