Naturally Google

http://www.google.com/search?hl=en&q=what+is+a+natural+language+search+engine%3F

http://www.google.com/search?hl=en&q=what+is+powerset%3F

http://www.google.com/search?hl=en&q=Powerset+vs.+conventional+search+engines+-+a+sample+question

http://www.google.com/search?hl=en&q=which+U.S.+state+has+the+highest+income+tax%3F

http://www.google.com/search?hl=en&q=how+much+did+microsoft+pay+for+powerset%3F