“sometimes i think it would be really funny to copy the away message of someone who is on my buddy list but shouldn't be just to see 1) if i'm on that person's buddy list (and then if you subsequently IM me in outrage/fear, you are just as scary for having me on yours; 2) if we have mutual friends who report my plagiarism; 3) stalking is fun!; 4) maybe someone will steal this lame away message in a [witty] attempt at rebound humor!”

If the person you are stalking knows that you are stalking them, you are doing something wrong.