This is IMPORTANT.

I feel a bit ignorant despite having spent three years on TW. What, in your opinion, is the correct use of the smilies

crazy? I sometimes use it to stress that I am confused.
tongue? I tend to use it about the same way as I use wink .
Ribbon and Trophy as post icons - is there any difference?
Link as a post icon - does that mean link as in internet link? Or how do you use it?