"Do not create an extension that requires users to accept 
    bundles of unrelated functionality, such as an email 
    notifier and a news headline aggregator. If two pieces of 
    functionality are clearly separate, they should be put 
    into two different extensions, and users should have the 
    ability to install and uninstall them separately,"

Kudos to Google. Now if only they applied the same logic to the advertisements between the search box and the actual results. Search results and advertisements only represent the same functionality when my search query expresses my intent to purchase something.

I know advertising is Google's business model, so before anyone points that out, let me point out that I've also never been offered the opportunity to purchase the ability to use Google's search without advertising. They should follow their own policy here and give us the ability to uninstall advertising from Google even if it does come with a monthly subscription fee to do so.