[jokermatt999]

As someone who occasionally finds myself nitpicking things (mispronunciation, you're/your, etc), I don't do it out of malice. In fact, I often like and agree with what the person was saying, I was just bothered by that minor issue.

Just pointing out a nitpick by itself sounds harsh, though. Instead of just posting "It's 'you're' for the contraction of 'you are'. It's easier to remember if you think of it as just replacing the 'a' with and apostrophe.", I always try to add my positive thoughts as well, even if I feel they add very little. For example, 'Great post, I know exactly what you mean when you say some people are just overly critical for no reason. One thing, though...".

Obviously, this will still make me sound like a nitpicking asshole at times, so I try to avoid the the truly small corrections (you're/your, its/it's, grammar/mispellings in general). The key is to point out that you aren't dismissing or ignoring the rest of the work, and that the nitpicks you had were really the only part you disagreed with.

[smokeyj]

Most critiques by grammar Nazis add zero value to the conversation and distract from the topic at hand. Have a cookie, you payed attention in English class, now gtfo