Wolfram Alpha

Stephen Wolfram (owner of Wolfram Research) has released (after announcing it in March) Wolfram Alpha, a kind of web search aimed at natural language and intelligent answers. JME pointed me to this question:

Taken from Wolfram Alpha page

The strange thing about it is that is is fully written in Mathematica (or so they say, 5 million lines of code). Strange indeed, Mathematica isn't a particularly fast programming language. I bet someone could write a LISP version of it in half that lines... without word-wrapping ;)