I'm horrible, especially in places like this, where to me it is casual, and informal. I spell things wrong, use them in the wrong sentences, etc. It's not past me to put the number 'two' in a sentence, where I should have put 'too'. Or now instead of know, either because I didn't hit the key hard enough, or just didn't pay enough attention.
It is when I have to do something inside the four walls of my office, that I am pathetically careful, and it takes more time to cross all the t's and dot all the i's. I know there have been some mail list and forums where I have really ticked people of because of my spelling and/or wrong use of words. I apologize profusely. It is just not that important to me, when I am among friends.