Isn't the Referrer header what Google Analytics et. al. use to tell you how people are finding pages on your site? Seems like that could be quite useful for a

Isn't the Referrer header what Google Analytics et. al. use to tell you how people are finding pages on your site? Seems like that could be quite useful for a webmaster to learn more about his audience, tailoring his content to better fit the traffic coming from those sources and identifying other sites that might be abusive (e.g. scraping his content).