Facebook should have a 'Not Like' / 'Thumbs Down' Button too ..

  All popular websites have it. It's obvious if you can like stuff then you will dislike stuff as well. Every now and then people post stuff on facebook that you don't really like. I suppose their idea of not liking something is just not to click 'the like' button. But that is not enough, sometimes you want to express your feelings and a 'not like' or 'dislike' button would come in extra handy.