Kobold,
Welcome to Codex, Please read your User:Talk page for a message. :) You can and should upload images to the Codex, you are welcome to do so, too.
There is a display issue because the wiki engine is parsing things incorrectly for this specific table code:
| [[Image:icon_neutral.gif|neutral]] || ' :|'<br />' :-|'<br />':neutral:'
You can see the error if you look at the "neutral" row of the table. It seems like the bar in ' :|' is misinterpereted as being part of the table. Any workarounds?
What is the license of these emoticons? Who created them?
I am running WordPress 1.5 on my site, ManlyGeek, and I've noticed that using :?:, which should produce a question mark smilie actually produces a confused smilie, which is normally indicated with :?. I've even tried changing the order of definition in the $wpsmiliestrans array with no change in behavior. I finally created a new definition :quest: to differentiate the smilie. Is this a known problem in WordPress or is there something wrong with my install?