Wolfram Alpha

Today's WolframAlpha, http://www.wolframalpha.com/, is the first step in an ambitious, long-term project to make all systematic knowledge immediately computable by anyone. Enter your question or calculation and WolframAlpha uses its built-in algorithms and a growing collection of data to compute the answer. For example, I typed in my birthday and Wolfram Alpha provided me with the following information: Events on my birthday, how many days, weeks, years, etc. ago the date was from today, daylight information and phase of the moon. Very interesting...I believe that this site could be used in a variety of educational ways. Let me know if you utilize this site and by what means.