Per demand, I have my own pack of face graphics that you are free to use as avatars, reaction images or what-have-you. They’re also larger than they are in comics, wowee!
(Typically updated with each comic release sometimes)

Here’s my April Fools 2013 contribution. My hands are forever impure:
Theme | Comic

Since somebody asked, here’s a little mini image banner thing you can use if you want to link to me. I don’t intend to have any affiliates on my end, though.

(please host it on your own server)