While there's little doubt that priceline.com (NASDAQ:BKNG) paid a premium when it bid $1.8 billion for recently public Kayak Software (NASDAQ: KYAK), there's value in the search data Kayak possesses. Think about it. By querying every type of database imaginable in the quest for deals, Kayak's engine has built a storehouse of travel intelligence not unlike what Google (NASDAQ:GOOGL) has created in its indexing of the Web, and that's bad news for incumbents Orbitz Worldwide (UNKNOWN:OWW.DL) and Expedia (NASDAQ:EXPE). Find out more in the video below.