Wolfram|Alpha’s Terms and Conditions

Dans ce billet, Brian Kelly passe en revue les "termes et conditions" d'utilisateur du moteur de recherche (non sans humour):

[...] If you make results from Wolfram|Alpha available to anyone else, or incorporate those results into your own documents or presentations, you must include attribution indicating that the results and/or the presentation of the results came from Wolfram|Alpha. Some Wolfram|Alpha results include copyright statements or attributions linking the results to us or to third-party data providers, and you may not remove or obscure those attributions or copyright statements. Whenever possible, such attribution should take the form of a link to Wolfram|Alpha, either to the front page of the website or, better yet, to the specific query that generated the results you used.

So  if I ask Wolfram|Alpha what 1+1 is, if I published the result ‘2′ I must provide a link back to Wolfram|Alpha.  And if I ask “What were the dates of the second World War?” I need to provide a similar link before using the answer “1 September 1939 to 2 September 1945″. [...]"

(source: UK Web Focus, 03/07/09)