We are not all Oxford English professors, so a little tolerance of spelling and grammar errors should be allowed (eh, did I say that, Surreal?

).
Actually, I don't mind most spelling / grammar errors in posts, except when made by those who complain abou grammar and spelling in other ppl's posts (can I use
ppl, please? It's lazier and quicker

).
It does become annoying when you can't understand what is being attempted to be expressed, though. That is my main complaint, and then it's often because the person is either a) not from an English-speaking background, or b) has very poor literary skills. In those instances it's just not cricket to complain, really, but just persevere and try to underatnd what they are getting at.
Anyway, those are just my thoughts on the matter.
Cheers
Mick the edit button freak