You are right, it gives different perspective and holds back most users from sharing and engaging long conversation just because you can earn money from posts/comments. But I think these issues challenge us to make tools better, improve, give options to comment or quote comments multiple times. Give user options to change theme/style of entire website so that they can use it as forum style, twitter style, even facebook style, etc. after all, improving UX is important and should be taken seriously.
I like forums as well...