I can't imagine ever using the yellow one; it lacks even a hint of humour! If I was really that angry with someone, I think I'd take it to a VERY ABUSIVE AND EXPLICIT EMAIL rather than cluttering the MB with my spleen. :mrgreen:
EDIT forgot to vote, didn't I
...and I'd also like to add that if I ever read a post responding to anything I'd said with that emoticon used on it, I think I'd feel very...attacked, I guess. I really does lack a sense of fun, which is what makes all the smileys so useful - they may express all kinds of emotions but they nevertheless have a sense of the quirky and fun about them that makes them so inoffensive.
The PO'ed one doesn't.
IMO :mrgreen: