> Regardless, based on things like OS and IP, I understand how you could infer, say, an income range from that, but how precise could it be? A simple geoip que

> Regardless, based on things like OS and IP, I understand how you could infer, say, an income range from that, but how precise could it be? A simple geoip query is pretty accurate when it comes to placing my neighborhood, which is already a fairly big indicator of income level I believe. And all the laptop advertisements google is showing me because I looked up my laptop recently show they know plenty enough about my shopping habits to make some fairly accurate guesses about my demographics, I'd wager.