I've been in Grammar Nazis Anonymous for several years now, and alas I'm not cured--but it is helping. I no longer lambast the masses for the artless cacography ubiquitous on today's internet, nor do I even resent them anymore. But I can't help but to enjoy it when I see somebody else as anal-retentive about their contractions as I am.
By the way, all my grammar comments are intended to be lighthearted, and I'm primarily poking fun at myself for being OCD.