Starting a new thread as this would sound rather off on the one to which I refer.
I find the Zombie 'home fire' thread incomprehensible. Not because I disagree with it, or want to spoil it or anything.
But because person after person has posted just blank squares. Now, I assume they are a non MN emoticon of some sort. But they can't be read by all devices, and whereas usually you can guess by context you just can't when that's the entirety of the post.
Which got me thinking about MN emoticons again, and ask - as in the thread title - where's 
when you need it?