I never post these "must read" articles and, frankly, whenever I see "must read" in a subject line, I go to great lengths to avoid doing just that. However, this is awesome. If you think your opinion matters ... well ... you're just as likely to only be dead wrong. This article makes a great effort at distinguishing between mere opinion and factually ignorant wrong-headedness.
http://www.houstonpress.com/arts/no-it-s-not-your-opinion-you-re-just-wrong-7611752
http://www.houstonpress.com/arts/no-it-s-not-your-opinion-you-re-just-wrong-7611752