What is this about Wolfram Alpha, a so to speak Google killer? With some background you understand that search will be boosted as this search engine tries to implement semantics into your search. Still, you need to have the right questions. I think that is the tricky part. If you do not know what you are looking for or if you do not even want to know…no search enginge will be able to help you. Well, there could be a question engine coming up as 3rd generation.