I was expecting it to be a little more encyclopedic than it seems to be. I mean, math stuff if awesome and although I can do it all (i think) in Mathematica it's very good for the world to have a free tool that does those kinds of things.
But when it comes to facts... well, they're facts... You only get as a return the uninteresting information.
I think Wolfram Alpha can succeed if they point their strategy into something which is rare on the web: certified knowledge. Being able to type a name of a country and instead of getting facts, getting real information about its history. Information that the users can trust as a bibliographic source.
Because facts are facts... they exist but they're so uninteresting.