"A person who went through the trouble of setting up analytics tracking is probably a person with just enough vanity to immediately check up who's referring to their site."
Wait, what? I'm pretty sure if you go to the majority of sites on the Internet you will find some sort of analytics tracking code, whether it's Omniture, GA, or another. They don't do this out of vanity - they do it because they want to know where traffic is coming from so that they can monetize it.
BTW, you have GA implemented on your site as well. Does that make you vain, or simply smarter than the average bear?