Don't Apologise mate It's a slight error, I have done it myself, People like Brush, who feel the need to correct a spelling, instead of having something to say about the topic in question are quite frankly sad.
Not sad mate Just generally fed up with the poor quality of English used throughout the internet, and I particularly dislike "txt" speak. Don't worry about though mate, its just an age thing, it'll catch up with you eventually.