Should I start a new forum?

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I am considering of getting a new forum for my own site but there are some distinct advantages and some real disadvantages. I had made up pros and cons side for getting a forum but still don't know whether I should put myself into it. Please, if you can help me and interested what I have done for pros and cons side. Here's my original post. http://www.chemstudioweb.com/pros-and-cons-for-adding-forum-to-website