Google is also investing heavily in developing new ad formats, including a new one being tested for local ads, designed to make it easy for small businesses to sign up by filling out a one-page form and paying a monthly rate, Rosenberg said. That beta local ad service also includes a Web page for businesses that don't have one, populated with their information.
Another area of major investment this year has been the improvement of search user experience through the development of new features to help users refine queries and filter search results, he said.
"We see users today coming to us with much harder queries than they used to, so we're adding more ways for them to work with the results and get what they need," Rosenberg said.
Schmidt also addressed this topic, saying Google had implemented about 120 search quality improvements during the third quarter, and will continue to constantly improve its search technology now and in the future.
"We want to get to the perfect search engine," Schmidt said.
This story was updated on October 15, 2009