I think Wolfram Alpha targets a different target audience as Google does. I second the fact that WA appears to be a niche product, since a lot of people will find more information using Google rather than WA (the "Orson Welles" example is a good one. the second search result on Google is Welles' IMDB-page). summa sumarum we have to wait 'til the 18th of May to see what is hiding behind the big WA wall.