→ ring a bell
I used to do it. All the time actually. I don't do it anymore though; I don't remember the last time I put "/shot" at the end of my sentence.
Though I guess "/brick'd" is pretty much the same thing. Still, I don't use that often and when I do it's only when IMing someone (or rather one person. I don't remember using it on anyone else recently) or on Plurk the latter not being very often if at all. I don't remember the last time I had put it in a post.
As for things that bother me nothing really. I've grown accustomed to most typing quirks probably because chances are I have likely used all of them at least one during my time.