[seviuqyelsdnirb]

I agree that there's no need to resort to personal abuse. However, I think your examples are a bit contrived: I don't think I've ever seen someone hit with a tirade of insults, merely for missing out the definite article —in fact [as a bit of a Grammar Nazi myself], I usually take that as a sign I'm dealing with a non-native speaker [Probably Russian]. No fair-minded Grammar Nazi will attack someone writing in English as a second language.

What I get annoyed by are the people who ARE native English speakers and who can't be bothered to spend a few minutes proof-reading what they write, or learning a few trivial grammatical rules ['your' vs 'you're', 'there' vs 'they're' vs 'their'] but yet expect the rest of us to struggle through their lazy, mangled prose, trying to extract meaning from it.

Why the fuck should I? If you can't be bothered taking a little time to check over what you write, before spewing it onto the internet, so that it makes grammatical sense, why should I put in valuable on time on your behalf, deciphering your blatherings? You've already shown me you don't care enough about what you want to say, to make the effort to express yourself clearly. So I'm not going to care enough to bother reading it.