wp-monalisa is the plugin that smiles at you like monalisa does. place the smilies of your choice in posts, pages or comments.
works great and spices up your buddypress website -love it!!
There is no way to add custom emoticon e.g. "http://www.emoticonsource.com/emoticons/emoticon1.gif", or add an external folder, the script is too hard to modify.
A simple form like this should be useful when somene has to include an emoticon hosted in another server:
Emoticon name: :custom1:
Simple and great plug in, thanks, Hans.
Easy settings, good support and it works on multisite installs. I recommend !