Facebook introduced its new search function at a media event this morning at the company’s Menlo Park headquarters.   Called Graph Search the tool allows a Facebook user to explore their network of friends and connections for information that has been shared with them.   CEO Mark Zuckerberg was on hand to showcase the latest product from Facebook and he explained that Graph Search was different from a Google (NASDAQ:GOOG) or Bing (NASDAQ:MSFT) search in that it provides answers instead of links to answers.   "With Graph Search you combine phrases (for example: 'my friends in New York who ...