Never correct someone else’s spelling or grammar mistakes on the internet. You will almost certainly make one yourself. It’s a basic rule of the internet.
Very true, but one of my favorite pastimes over the past twenty years (since e-mail came into vogue) has been looking at e-mails received from company managers, directors, Vice-Presidents, etc. at my work, and counting the grammar and spelling errors in them. You'd be amazed. Very rarely do you see a clean message.
Good advice, and I was very paranoid when preparing my post. Didn’t want to make a mistake about Cuomo making a mistake about a Trump mistake! ;-)