WolframAlpha went online a few days ago.
“So what?,” you say — same as I would have said before watching this introduction. A “computable” knowledge source like WolframAlpha looks much more useful than a simple look-it-up like Wikipedia or listing of links like Google, though the functions of the three do differ to some degree.
If you’ve spent any time taking WolframAlpha for a test drive, please let the rest of us know what you think. Is the hype warranted?