I have a number of pages that aggregate newsfeeds for a single topic like http://www.aspiringgeek.com/inline . I am considering creating a customizable page so users could set up an account and select their news feeds. When ever they visit the site they'd see a page with their chosen news feeds and associated Google ads. I assume Adsense would do well if I set up a unique link or url string for each user. Is it correct to assume that having everyone go to the same URL would lead to less accurate Adsense ad targeting?