Replaces the graphic emoji's that facebook substitutes for ASCII emoji's with plain text characters. I personally get really pissed whenever I try to insert a text emoji and the website decides to hijack it for some ugly little graphic they've picked out.

**Note** This will not change what other people see when you send a message, just how the default facebook emoji's are displayed for you. I'd probably need to write a greasemonkey script or something to disrupt that process, and I ain't got time for that shit.

Per the font options:
Monospace is 'traditional' for ASCII because it makes sure everything lines up, but for plain text emoji's, I personally think Arial looks best. Feel free to pick 'Default' though, and it will set to inherit the font from either the facebook default or any other theme you're using.