I originally started watching You Tube because I could filter the information that I received and could enjoy meditation & How To videos without losing my focus due to irritating commercials. Now, during the middle of a meditation video or How To video, an advertisement pops in changing my focus and attempting to force me to accept ideas in which I have no interest. I believe that commercials/advertisements are nothing but subliminal messages. I stopped watching television for this reason... You can pay a fee to avoid seeing the advertisements, which is ethically incorrect, or continue to watch the foolishness. I would have given You Tube a high rating because it can provide a lot of useful information for folks that are interested in learning. As for the negative content, I personally believe that You tube should sensor the content given that children are exposed to and easily influenced by negative videos that do not support a healthy, happy and healthy lifestyle. As healthy adults, we can elect to ignore the negativity but, children are a a "growing crossroad" and need positive guidance in order to become decent and productive citizens. I will not discuss the psychologically challenged folks that do not need the negative exposure to "certain content"...