tellmewhen, Do you think that posters other than yourselves don't notice errors? I clock them. I don't blurt them out because a) the poster hasn't asked to be corrected and b) it's not my job/would possibly irritate them.
Anybody who wants to read beauty in the English language wouldn't come to AIBU particularly, they'd possibly go to Pedants' Corner. I go there myself quite often to educate myself about the knottier aspects of the language.
Perhaps you've not seen threads on AIBU where a poster's SPaG is being pulled apart irrespective of the nature of the problem the OP has posted about. It's like a pack of hyenas sometimes and it's sickening. There's no need for it, who the hell learns from being 'told off' at mis-spelling something or putting apostrophes in the wrong place? The utter arrogance of some who can't/won't comprehend a post that isn't written to their liking yet they feel the need to tell everybody on the thread that alas, they are unable to help because the paragraph is too long/there is insufficient/no punctuation. It's pathetic.
This thread could have been nice; I would have probably added some mis-phrases that my mum uses; they're apt but very wrong. The difference is, I laugh with her, not at her and I don't make her feel 'less than' for them.
I would agree with you that we do all judge but would disagree that we need a posse of like-minded people to gang up with to verbalise it.
That's it really. I don't need anybody to agree with me, that's how I personally feel about threads like this and about the excuses that some are making for their spiteful contributions. I've said my piece so I'll leave it there.