This Animal New York article by Joel Johnson has been hitting all the usual bloggy suspects this week. It suggests that comments are bad for business. Facebook and Tumblr and Twitter and other social media has taken the place of the online community-building that blog comments used to foster, Johnson argues. (Although people keep trying to make content even more social.) Further, he makes three major points: "Most comments are terrible," "Comments don’t make any money," and "the people who actually read comments are a small fraction of one percent of [many sites'] entire readership."
I'm sure there must be some kind of argument to be made for comments, but I can't think of any right now. If you have a reason for comments to exist, leave them in the comments below!