I agree with PC, if stating that you dislike some song is influencing people, then someone stating that they like it is also influencing people... it goes both ways. If someone starts a thread asking what people think of a new song or PV, people are going to give their opinions on it, both good and bad. That's the way life is, you're going to get different opinions on something, always. Even two people who like something aren't going to agree on which parts are best and which aren't
If everybody thought the same way, then life would be boring.