ZD Net writes Google has hired Ori Allen and maybe bought his Orion search algorithm.
Unfortunately there is no public demo of Orion, but this system is said to give users the most relevant results and a list of suggested topics that the user may not be aware of — similar to QTsearch. An example would be a search for the "American Revolution".
"Take a search such as the American Revolution as an example of how the system works. OrionTM would bring up results with extracts containing this phrase. But it would also give results for American History, George Washington, American Revolutionary War, Declaration of Independence, Boston Tea Party and more. You obtain much more valuable information from every search."