I sure as hell can't speak about typos since I'm probably the worst one here.
I don't think I make as many spelling mistakes as I do typos but they're about the same in the annoyance factor. I don't pay attention to my spelling or typos, I usually type dind't instead of didn't but I never bother to correct it.
And I feel sorry for anyone trying to learn English as a second language. It can't be easy.