And most importantly for everyone, including visitors, this scheme can only improve as the process gets further refined to make ads more relevant to what you’re looking for, not just a couple of keywords on a site.
Nowadays, it is because of AdSense that Internet surfers are looking after more interesting related things from banners, and the companies behind the site (Google and the advertiser) need to have better ideas to display, as expectations have increased a great deal.
So could “Do no evil” actually work in today’s cut throat competitive marketplace? Well, as you can see it can and it does. And you, as a visitor are the one who gets to enjoy this the most. Advertising becomes less of a burden and more of a benefit, and is still a benefit you can choose to ignore.