I believe Wolfram|Alpha launched via webinar last night (GMT speaking). Not being a search engine geek I thought I’d just quote the tweet from CannonGod:
CannonGod Wolfram|Alpha Feedback: ‘No Result’ page needs to lead to similar queries/simple results. Users are getting frustrated hitting a brick wall.
Just for fun then I tried looking up data on medical imaging; the results page returned a message to say it was under investigation, and gave the option to leave my email to register my interest: so not so bad a verdict from me!