many of the older "smileys" have been hidden to screamline the "more" smileys page and make it easier to navigate.
Many of our favorites are no longer clickable, but they still exist, if you know the codes.
I have asked for a thread (it can be a closed, sticky thread in the site direction areas or something) that lists all the ones that have been hidden and the codes to use when posting. If such a dedicated thread has actually come to be, then I may have missed it.
Callaway, Renaeden or Parts can help us find the hidden ones, if we ask.