Smileys, etc. don't bother me anywhere near as much as the juvenile chat speak I see so much of here. To me, that should be an actionable offense worthy of Warnings.
It's one thing for a non-English speaker to post in broken English; at least they're trying. I certainly couldn't post anything at all in German or Ukranian

. But the silly, non-sensical jibberish I see here is another matter, it's just a sign of immaturity and laziness.