I have a issue a bit like Garg's comment. Because of the speed with which i have learnt to type I find it hard to write the and often spell it teh instead. And I always panic that I'm going to be rejected from RP's because i do tend to get letters mixed, and people have spoken up about it before. I mean, yes, I do correct people when they make spelling mistakes, that way they can learn from their mistake (and if they do it repeatitivly, I know mistakes can be made, see how I spelt repeatitivly (I know it's wrong, but I can never figure out how it is spelt)) but I don't threaten to kick them from an RP if they don't put in capitals. Sure, it would be nice, but that's how they type.
But I do get irritated when people write every word with capitals. Not because I'm Nazi, but because I have this odd thing where I have difficulty reading setences or paragraphs written like that. I just get so frustrated when people do that! I tend not to say anything about it, but I have seen a lot of it lately and it is getting to the point I might just have to speak up about it, I DO like to be able to read peoples posts, and I can't if they write like that.