Oh you can put a jpeg of one in the text box. I had a mod respond to my "I'm excited" post on Sunday AM before a Patriots game with one. Assumed I was a Pats fan and called me "Chowderhead" and gave me a one-finger salute.
Dope didn't look at my location (NEbraska), past posts, or notice the Niagara Falls picture, to know for sure if I was a Patriots fan. Idiot.
Anyway, it can be done!