There used to be a grammarian ping list on FR. Spelling ping list as well.
I’m more of a linguist than a grammarian, but sometimes the blatant disregard of grammar sticks in my craw. The problem with grammar is that it so quickly becomes nitpicking.
So I try to limit my grammar poking to when people say the opposite of what they mean, or the misspelling/grammar is in the TITLE of the thread or the first line. Sometimes when I see more than 3 grammar mistakes in a sentence I jump on it, but usually it’s when I disagree with the statement.