I don't know about anyone else, but I definitely judge people upon appearance.
If I were to see this woman on the street/at a party/etc.:
I would think she was stuck-up, a bitch, too-cool-to-talk-to-me.
Thankfully I got to know her before I saw a picture of her, via twitter. And she is a hilarious, warm, loving, sweet, smart lady. Unfortunately she lives in Denmark, otherwise she'd make a great friend! (still makes a great friend, just, definitely internet-only)
But that's interesting, and pretty sad, that I do that. And it's totally about ME not the other person. Hopefully I can change that...