I don't think I make a lot of spelling mistakes, but English grammar is sometimes hard for me.

"Could of", "should of", these are some of the most common and insanely annoying mistakes made on forums. How do people who are otherwise good at writing get this horrible linguistic misconception into their heads?

User Requested removal

Well... everybody commit mistakes when writing, even in their native language...... but considering that we´re talking about a product, it really is a problem.
Maybe some developers just lack people to do proper text review, maybe they think that´s unecessary work. But it is not... in any product with lots of text, you do need text review

Dyslexia, dysgraphia, lazy, not writing in mother tongue, trolling, for the lolz...

Mobile is a good excuse that anyone can use, because if we don't then the terrorists win.

That would explain it - I am from the UK and assumed that you were too, from your profile. During my career I have had to write for both North American and Rest-of-world audiences, so I have needed to have a good knowledge on the spelling and grammar differences between American and British English. It's interesting to see how both versions of some expressions are becoming mutually acceptable on both sides of the Atlantic over time.

I put down my profile information at random. I don't think there is anything in there that is accurate. I think I was visiting my uncle in the UK around the time I began visiting this site. Maybe that's why I chose it. I've forgotten the reason why to be honest.
It's interesting that you had literary work internationally. I can certainly understand a bit more now the reason grammar and spelling are significant to you.

Because people (especially, in my experience, native English speakers) are insecure and refuse to be corrected. Instead of thinking that you're being helpful by telling them about proper usage, they take it as a personal insult and become aggressive. This means they usually don't get corrected because most people are afraid of starting a fight with them, and even when they are corrected, they throw a tantrum at the person for pointing out their mistake instead of trying to fix their error and learn from it.

In short, people who continue to make simple errors usually regard their sense of pride as being more important than self-improvement and communication skills. Ironically, the obsession with saving face makes them look much worse in the long run.

Easily avoidable mistakes are also a mild nuisance to me as well. Personally I try to write as correctly as possible, but even though we are taught (British) English in school since the age of 11 and movies, tv and video-games are never dubbed in our language (thankfully), except things meant for children, I'm still not a native English speaker. Barring some dumb typo, anyone's welcome to correct an obvious mistake I'd make.