Get acquainted with the name "Wolfram/Alpha" because you'll be hearing more about this powerful new website. Bill Williamson passes along the following info. Here's a 13 minute intro, and this is the actual search site. Bill says, "This data base will in some ways be like Wikipedia, but much, much more powerful." He notes that he "used to use Wolfram's mathematic quite a bit and was very proficient at it, but only for scientific work." The site itself says, "We aim to collect and curate all objective data; implement every known model, method, and algorithm; and make it possible to compute whatever can be computed about anything. Our goal is to build on the achievements of science and other systematizations of knowledge to provide a single source that can be relied on by everyone for definitive answers to factual queries."