Taking a look at places users go immediately after visiting Google to search for something suggests the next area Google might explore, after its recent move into travel: gaming.
The table shows the top 20 downstream industries visited after a Google visit during the month of June 2010.
Google's presence is obvious in most: Search Engines (Google.com), Entertainment (YouTube), Shopping and Classifieds (Google Shopping, Google Base), Business and Finance (Google Finance). Google's presence is perhaps less obvious in others: Social Networking and Forums (YouTube, Orkut, Google Talk), Education (Knol, Google Book Search, Google Scholar), Lifestyle (Blogger).
After travel, gaming is the next area where Google does not arguably already have a presence.