"The old search engine ways are just not working. There are obvious flaws with ranking pages by relevance – keyword spamming being the most prominent. And listing pages by popularity, Google’s current system, all but rules out pages that might be valuable but collect few return links. Perhaps the most heated race at the moment is to create a search engine that goes beyond the timeworn concept of ranking pages by popularity or relevance alone. That means developing a search engine that not only understands what you want, but also can reach into multiple platforms – your email or your intranet, for example – and deliver results in a clear way. It also means the ability to decipher ambiguous searches, recognize natural language, and deploy sophisticated multifactor search algorithms."