I should patent this idea

  A new kind of CAPTCHA.
  It asks you a question that you would only be able to answer if you read every word in a story.
  When you do that, the ability to comment is turned on.
  Otherwise, no comments allowed.
  That way you would never have to say to a commenter -- "I'm guessing you didn't read the piece."
  Which happens so often that it's pretty obvious no one ever reads anything.
  I'm just kidding about patenting it.
  PS: Most of the comments will be How dare you patent something! :-)