Google has posted profit gain of 43% in Q3 this year compared to last year. New product releases are said to be the main reason for this hike. Everything seems to be going very well for Google as their core businesses, new products and advertising, are very healthy.
Yahoo on the other hand did better than forecasted (which raised their stock prices) but their overall revenue is down. These gains give Google more leverage and allow them the ability to pull further ahead in dominating the Internet. They are on pace to earn more than $15 billion this year alone.