Alex's comments about the terms of use of Wolfram Alpha
http://www.wolframalpha.com/termsofuse.html
got me amused when I read they have trademarked 'Alpha'.
Trademarks
Because the Wolfram family of companies markets a vast and growing array of
products, a list of our trademarks and registered trademarks would be cumbersome
to list. Some trademarks associated with this website and service are Wolfram
Alpha™, Wolfram|Alpha™, Wolfram®, Alpha™, Computational Knowledge Engine™,
Spikey®, Wolfram Mathematica®, Mathematica®.
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