It is suspected that those doing click arbitrage will likely be amongst the first to be affected, as many offer landing pages with nothing or little else other than Google or Yahoo ads. Click arbitrage involves buying inexpensive pay per click traffic, such as from Google AdWords. The advertiser then hopes that each visitor will hit the landing page and then click a higher-paying ad (often Google AdSense or Yahoo ContentMatch) to leave the page. As a result, many click arbitragers have either no content on the page other than the ads or just enough content to influence the AdSense ads.
Those affected by the new algorithm will see their minimum bid prices change.