I'm not normally the type to complain, but I do get upset when people use incorrect grammar or spelling. It's involuntary, I can't help it, and it often gets me into trouble. There is no nice way to correct people's grammar or spelling; no matter how much you smile you're still saying "you suck at your native language".
Worst offence? "Hope your well". It's "you're", people!
Anyway, I was pleased to see that grammar and spelling nazis have their place on the interwebs. I love this blog, which highlights the "unnecessary" use of "quotation marks" (especially as they accepted my humble submission), and also this one which, literally, tracks abuse of incorrect use of the word literally. Thank you.
And now I've declared my dislike of these errors, I'm sure someone will find such an error somewhere on my blog. I offer a prize to the first person to find one, and a prize-and-a-pint if you happen to find one in this article. Good luck.
PS While I'm on the subject of pet peeves, can we please extend the national curriculum so the next generation don't get Big Ben mixed up with the Palace of Westminster Clock Tower (also sometimes called St.Stephen's Tower)? Even the mighty Beeb have got this wrong today. Grr.