I was just wondering if anyone has used www.quantcast.com? In order to "quantify" your site you paste a code on every page of your site and they give you information about your visitors. I came across this site when checking on some things and noticed they are linking to one of my sites and have a certain amount of info already but I was wondering if it would be worth while to bother with this quantifying. And...how would one go about placing the code on a semopro site?