The Google Revenue Equation, and Why Google’s Building Chrome OS
mashable.com
mashable.com
The revenue equation here isn't quite right though: it's not "Revenue = Amount of Time on Web", it's "Revenue = Amount of pages viewed on web". Each page is an opportunity to run across Google advertising. That's why Google has focused so heavily on making the web faster, Chrome, ChromeOS, guidelines for webmasters, and hard latency constraints on the search engine. If you let people search faster, they'll search more often.
So what would have been good for silly old "portals," namely stickyness, was bad for Google. Conversely, ADHD browsing is good for Google! Linking is good for Google. Competition on the web is good for Google!
To put it more generally, the more people want to search in ways that require their attention, the better for Google!
I have made an interesting observation of my own habits recently which reflects on how well they are doing. For the past year or so I have not once needed to listen to music in an mp3 format stored somewhere on my computer and I have entrirely stopped hoarding new mp3. Abundance of streamed music on imeem, pandora, and last.fm mean I can access practically anything I want at any time.