Nope, I don't mind people using my pics on their pages in the slightest. Hell, I'm filled with girlish glee if you do.
Nothing awakens the raging beast within an artist like someone ripping off their art.
I will hunt you down with a brick. Sorry, I don't do request art. Unless you're a friend, in which case I'll probably inflict art upon you without warning. And no, I can't illustrate your game. Especially for free.