Yea, I was directing the statement at you, but it was no attack. It was a correction. An attack looks different.
If I said something like "omg, are you ******** or something, you moron?", then that would be a personal attack. Or if I said "you're typing like a monkey", that would be a personal attack.
But saying "Hey, man, you typed wrong, although you should know it better cause it's your native language" is NOT an attack.
I just put it in an exaggeration (hence "aren't you ashamed a Russian has to tell you that") because that's what I do.
That being said, I am Russian, so I know my English sucks badly anyway. I don't even know how you guys understand me (and I'm serious about this :|). Not letting corrections get at me, though, I use them to become better at the language.