If, like me you are frequently infuriated by rogue apostrophes, erroneous implementation of words in sentences and general mindless, grammatical hooliganism, then you may enjoy this link I just stumbled across. It gets my vote. http://happyplace.someecards.com/9574/grammar-test-keeps-idiots-off-of-the-internet
I can handle one or two of those in any given post, especially if the author's native language isn't English, but if it isn't and the mistake is made consistently, I lose a bit of faith in said author. Then again, I don't confront people with their mistakes in fear of causing some major drama. Makes me feel like a douchebag too, even though in some cases I know for certain that I am right. *sigh* It's a complicated issue for me... (Had to correct "its" to "it's" though, I still make that mistake consistently).
And as a writer, I couldn't resist! My biggest pet peeve is hyphens. I hate when people fail to use them!