I hate it when people tell me I'm being too uptight about language rules. NO, I'M NOT. If you get simple things like 'its' and 'it's' confused, don't blame me for calling you stupid, or ignorant at best. Sarah over at
Tomato Nation has a lovely (informative) rant about things that people commonly get wrong.
I speak, of course, only for English, because it's the only language I speak or write well enough to have a
thing about.