Hooray! Orbiter Forum is becoming the centre for Grammar Nazis...
What is wrong with encouraging proper grammar and spelling in an international forum? I am not a native English speaker, and every time, I read a post written by a chat-legasthenic*, despite the availability of spell checkers, I am not only having a hard time deciphering the post, but also get annoyed by the disrespect of the poster against the people who should read this.
This is a forum, and not a FPS, where you need to type your communication in fractions of a second and proper spelling is less important than surviving while typing the message.
Also, I dislike the inflation of the use of the Nazi-attribute. True grammar-Nazis would attack you despite you using absolutely correct grammar. Just like real Nazis did not stop at harassing Jews, Gypsies, disabled or communists. It is still enough for them, that you are not Nazi enough. Before you call somebody a Nazi, think twice if his behavior is really bigot enough for this attribute.
A proper use of a Nazi-word is for example against many US right-wing conservatives, who already call you unpatriotic, if you are just not patriotic enough in their eyes.
*Legasthenia is often translated incorrectly as dyslexia, but is actually a different more specific disorder(ICD-10: F81.x), that does not exclude that you have been just too lazy to learn the language. (Dyslexia is R48 in ICD-10, and generally nothing you should joke about or what you can easily use as an excuse for you just being lazy to type properly.)