Wolfram Alpha is coming out this month and many people say it will become a Google Killer. Frankly speaking, I don’t think Wolfram will be able to “kill” Google unless it can process multiple languages. Another reason is that Google is not only a search engine, it is also has many other services like Gmail, Google App, Google Doc, Google Map… All these services contains years of information and knowledge which is very difficult to catch up.
However, Google is already too big, and almost like Microsoft. It is the Law of Nature: Even if you like it, anything too big or too much is not good. For example, I like to eat fish, but I don’t want to eat it every day for one week, that will be too much and I might throw up in the end.