After discussions this week, I finally decided that I needed to address this issue. Based on the premise that folks who "enable comments" would like to know that their work was actually read, and would like to have it critiqued - it would be gracious of readers to at least say: "thanks for posting this," or "interesting write," or "please fix your typos, it's worth developing," or even "needs work." If writers weren't hoping for feedback, they wouldn't bother enabling comments. I just think it polite for readers to leave a comment of some sort. (IMO)