Katisha - you have not made a comment directed at one single poster (I never said you had), however, you have been commenting all through this thread about people being ignorant if they make mistakes!
Of course it's not 'superior' to know the difference - it is acting in a superior manner to point it out to others.
It is not morally superior not to care about it - it is, however, good manners not to point out errors other people have made, thus not making them feel uncomfortable/upset/embarrassed.
I also think you are wrong, I am sure I would be able to find posts where I have typed should of/would of when I would never write that (actually write not type) and if I proof read it I would pick it up. I have also seen posts where I have typed 'are' instead of 'our', 'there' instead of 'their'. When I am typing and not actually 'writing' and just 'chatting' it just happens . It does not mean I don't know the correct word to use. It does not show a basic misunderstanding - it shows a lack of attention, that's all.
If someone is preparing a formal document then there is no excuse for incorrect grammar/spelling/punctuation. There are plenty of resources to enable you to present those perfectly, however, I do not expect people to take the same level of care in casual situations such as this.
Ilovesooty - you are really failing to see the difference here aren't you. This is an informal chat site, a teacher in a classroom setting is not the same at all.
Cote to Amijee It would be interesting to hear if you can express yourself at this level in another language, but given your callous attitude to your own, not to mention an aversion to learning and education in general, I would seriously doubt that you do
Katisha - no you are right, it doesn't make people feel superior 