How to tell if you're a comments troll

[The_Flying_Skeptic]

http://edition.cnn.com/2010/TECH/social....fZiWs17Ild

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Question: You spot an egregious factual inaccuracy, break in logic or unsubstantiated claim in an article you're reading. You proceed to:
a). Give a frustrated sigh, log into your commenter account -- which features your real name -- and compose the following message: "Hey, [insert author name here], in paragraph three in which you describe [XYZ], you seem to be in error. [Explanation]." Then you drain the last dregs of your coffee and return to work.
b). Merely scroll to the bottom (having not actually finished the article), copy a link to your inane website/blog/product, pen a message akin to "What a useful resource for a person like me!" (bonus points if the sentence doesn't actually make sense) and paste said link under said message. You may, in fact, be a robot.
c). Completely disregard all previous comments and correct the author of his or her mistake, even though about 15 people already have done so.
d). Nearly black out with rage, roar into the abyss that is the idiocy of the internet and -- fingers all akimbo -- type: "YOU'RE SO FREAKING STUPID!!!!! I AHTE YOU!!!!!!!!!!!!!! SHUT THE HELL UP!!!!!!!" After which, you down the last drops of your Monster Energy drink, wipe the Cheetos residue on your athletic shorts and bellow up the basement stairs, "MOM!!! WHAT'S FOR DINNER???"

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[Shell B]

What if you do none of the above? If I see an egregious factual inaccuracy, I typically click away from the article and make a mental note not to bother reading anything else by the offending author.