The correct way to respond to misspelling and grammar

[Andrew Schreiber]

Out of curiosity, if you try to nudge them in the direction of spelling/punctuating even slightly better (or at all) and they blow it off as a "concern" is there a less subtle way of telling them they need to start punctuating? I mean, I could always just reach for the neg rep button but I prefer to avoid that approach as it just tends to irritate people more than educate.