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That's not against Wikipedia's ToS.

Ok, I've never read their terms of service, until now. I'm guessing they have provided credit to the actual authors with a link to the original article and included a licensing notice? (not on Facebook)

Wikipedia's Terms of Use basically just guide you to act in a manner compatible with the Creative Commons Attribution / Share-Alike license, as well as the earlier GFDL license. (I am not a lawyer, probably there are significant additions, that's just my take on it).

http://wikimediafoundation.org/wiki/Terms_of_Use

Facebook could have scraped Wikipedia without asking, but as it happens, there is an agreement in place. I happen to work at the WMF, but don't ask me for more details, I'm not that privy to them.

This thread might help.

http://www.gossamer-threads.com/lists/wiki/foundation/194087

Interesting. The thread certainly makes it seem like it will be mutually beneficial. Maybe Facebook is a little less evil than I think, considering they gave a heads up.

Yes, they do link the the Wikipedia article, authors page and the Wikipedia front page.

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