One site owner's view on comments

http://pando.com/2014/08/19/comment-sections-are-on-their-way-out/

Authored by: Bryan Goldberg.

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Bryan is an entrepreneur in New York and San Francisco. He is the Founder and CEO of Bustle.com. He previously founded Bleacher Report, and currently advises several startups.
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Major achievements, but it does not mean that he's correct on commenting systems. 

No one method exists for managing user-contributed comments, especially with comments.

I have no problem with sites that prohibit comments. Nothing exists that says sites must permit user-contributed comment. It's a big web. Users can comment by other means, like with their own blog sites.