When I see an error as egregious as this one on the Yahoo! front page, I can get really riled up:
If you’re angry, too, perhaps we can bond over our shared outrage. I know I get really pissed off when I read something written by a paid professional who doesn’t know the meaning of a simple word like mutual. If two people have a mutual dislike, then they dislike each other. It does not mean that they dislike the same thing.