http://news.cnet.com/8301-1035_3-575...-home-page-ad/
Google's Nexus 7 tablet pops up in rare home page ad
In a first, Google is actually touting a product on its home page, which is typically free of advertisements.
The $199 tablet started popping up on Google's home page today, marking the first time the company has so directly promoted a product.
That Google would go to such lengths underscores the company's desire to make a bigger dent in burgeoning tablet market, one still dominated by Apple's iPad. Given the traffic that goes through Google, the home page is one of the most coveted spots and prime real estate for advertisers. The company, however, has traditionally resisted attempts to run advertisements on its main page, beyond a link to its Chrome browser.
This is like Barcelona and its ad-free shirt.