I try not to be prescriptivist about language use, because language evolves, some people have learning disabilities, it doesn't strictly matter how a thing is said as long as the meaning is clear, etc etc etc, but I simply cannot get behind "should of". "Would of". "Could of". It's HAVE. I'll excuse you everything else as long as you make a solid effort to remember to type "have" instead of "of" in these cases.
Not quite under the same category but while we're here, I think it's the absolute height of rudeness to get someone's name wrong. We all make mistakes sometimes, as long as we apologise and learn then it's completely forgivable, but if you're continually misspelling someone's name, especially in a place where all communication is written (like, say, the internet) and you therefore have no reasonable reason to get the spelling wrong (typing Clare when it should be Claire, for instance), then I have to assume you're just an exceptionally rude human being.
I know language evolves, but there have to be some parameters. I know far too many teachers who can't speak English properly. I observed an English lesson where a teacher mistaught the children about similes.
Perhaps it's time we start protecting our language, like the French.
Think of us poor foreigners! How can we learn from you if you mess up your own language
Tbh, I often can't really tell if something is "British English" or "American English" until I read stuff in rants like these, i.e. the whole "It got bigger". Granted, I seem to remember that we were taught "It became..." at school many years ago but I seem to be using "got" these days without noticing.
I think it's the absolute height of rudeness to get someone's name wrong.
I also hate it when someone abbreviates a name or uses a variant form on the assumption that it's close enough. The name someone gives you is the name they want you to know them by, so don't decide that a different name would be better.
Where I used to work we had someone who went by Dave as a shortened form of his given name, and some slightly officious person decided this was too informal and insisted that the company records had him listed as David. Except that his name was actually Sukhdave. Oops.
I have the ability to speak to animals. If they had the ability to understand that speech then we'd really be on to something.