Yeah, I tend to defer to that also when I write papers and formal correspondence, but heck no will I do it on a forum. In fact, it used to be a major peeve of mine many, many moons ago to have people all "I will not go", "I do not think", "You did not do", "They are okay", and never use contractions because I expected people on forums to post as they speak and not using contractions in casual speech seems abnormal for most.