I remember the time when Sergey and Larry swore they'd never have ads on the homepage of Google. Last month I noted a big one for Chrome. Today there's an additional one. Now that's TWO ads! Google has its own products to market now, and it's using it's biggest firehose of attention to tell folks about them. Both are major new fronts in very large wars: Mobile and OS/Browser.    

How do you think this will effect its core brand?