20 hours of video is uploaded to YouTube every minute. That means 1200 people reviewing 24/7, making sure that the reviewer speaks the language(s) to watch for profanity.
Exactly - it's fairly obvious why Google has made the conscious decision not to do this, it costs a lot of money and their business model suffers. Ok - so they run the risk of breaking national laws and take the consequences when it happens. I'm not sure this is the most ethical or moral business model but it's what they have decided to do.
