From the guidelines: "Please don't submit comments complaining that a submission is inappropriate for the site. If you think a story is spam or off-topic, flag

From the guidelines: "Please don't submit comments complaining that a submission is inappropriate for the site. If you think a story is spam or off-topic, flag it by clicking on its 'flag' link. If you think a comment is egregious, click on its timestamp to go to its page, then click 'flag' at the top. (Not all users see flag links; there's a small karma threshold.)"