I have a problem with people who seem to be so passionate about stuff they hate. You use the example of Justin Bieber, who my niece quite likes, but loads of people do not. I tend to ignore the things that have no effect on me, and I do not like. Other people feel the need to attack such things. They are the ones with the problem.
If you do not like something, why bother wasting your time commenting on it. Sure, if it is something that affects you, like your government or road rules, go ahead. If it is something you can ignore, then YOU are being the fool.
I'm not concerned with Justin Bieber or Oatmeal specifically. Personally I'm interested in, and disappointed by, the phenomenon of people with no musical talent being successful musicians, and humorists with no discernible wit or drawing skill being successful comic artists. The problem is not the people who are successful - the problem is with the audience. To each their own, but you don't really like something like Justin Bieber as a musical taste. People think you like it because they have too little experience with real music, and it is marketed very heavily.
If you do not like something, why bother wasting your time commenting on it. Sure, if it is something that affects you, like your government or road rules, go ahead. If it is something you can ignore, then YOU are being the fool.