#1 is a good idea if you are using a public computer, or one that is not your own (so bookmarking doesn't count).
#2 is probably like Goktimus said - it's not common enough, and this board has the most common already (how many emoticons do you need in a post?). However, there are custom emoticons out there, like TFs themed ones, that can be uploaded, so I'll keep it in mind.