This is actually really cool, and I had no idea Google made this product. I would probably choose to see kittens instead of ads. The author has this dynamically generated Mondrian-like art. #cool
1. You support the sites you visit without expending any energy. 2. You see fewer ads. 3. (And this is the cool part) you get to decide what to show in that ad space instead of ads.
Source: Give Google Contributor a try