I'm not a programmer but I appreciate all the insight I get on HN.<br>I'm curious if there is a way to get a users data/demographic info before they visit your site and based on that, change the experience/layout depending upon that information for a first time visitor? I know you can have them login with FB or Google and you can get that info but I'm wondering if there's a way to get that data in real time without having them login?Similar to this concept:
http://online.wsj.com/article/SB10001424127887323777204578189391813881534.html
Thanks!