"Internet Commenting" is a modern form of communication that some like and some dislike. This fine form of sharing information may be distorted by a variety of characters with their interests in; however, it should always be regarded as the media to reckon with. Depending on NY Times, The Guardian or China Daily for example, could give too much power to some and misinform many. So, I'd let a free flow of information coming and allow all people be the judges of what is good or bad, right or wrong, or appropriate or inappropriate. Not to let all believe that informing people online is "thrilling" or "trolling" ought to be on our agenda here. Sites like this one are, or should be, a source of information for teachers who travel around the world to help many learn.