This is based purely on personal observation, but is content still relevant for adsense these days. I've noticed that no matter where I am on the web, the ads served seemed more relevant to my own personal browsing history rather than the site im on. Obviously adsense is probably cookie/browsing history based, but has been for a while . It just seems to me to WHOLLY cookie based to me at the moment. So.... with that in mind is it purely about traffic and placement position rather than the site your on these days ? So for instance is it pointless building sites for high CPC search terms like mortgages/ loans if the person on the site is getting served ads for fishing equipment based on ther personal browsing habits ?