i.e. if i'm searching for "widgets" and the first 10 results give me no usefull information on widgets , i'm alot more likely to click the "FREE WIDGETS HERE" ad on the side..
So to make more money they slowly worsen their algorithm so as not to scare away google users, as they slowly "worsen" the algorithm for legit sites and "increase" the value of adsense circle jerk sites they make the trend seem less , and by slowly changing the way adwords are integrated it doesnt seem like your clicking an ad at all
