2009/5/4 David Gerard dgerard@gmail.com:
http://www.businesspundit.com/wolfram-alpha-may-beat-wikipedia-not-google/
This time it's Wolfram Alpha.
If it works as well as it seems to in the demo, then it looks like a great tool. It won't significantly compete with Wikipedia, though. Wikipedia tells you a summary of general information on a certain subject, this tool is for getting lots of raw data about a certain subject, or specific question. They aren't performing the same task.