Hi,
some of you might already know it from IRC or the news. The Bibliographisches Institut & F.A. Brockhaus AG, publishing some of the best-known general purpose encyclopedias in the German language has started a web site last year that contains the full text of the "Meyers Taschenlexikon", a paperback small-to-medium size reference work mostly aimed at students. lexikon.meyers.de is the url. In the first weeks of its existence, they "forgot" to mention that this site is running MediaWiki (stripped of any Wiki functions).
In fall 2006, I met the CEO of the electronic/online department of Brockhaus during the book fair in Frankfurt on a discussion panel. He promised to release all the modifications they did to MediaWiki under the GPL. A few weeks ago, they set up an SVN server where they had published those modifications http://lexikon.meyers.de/meyers/Meyers-SVN
The description says GPL 2.0.
(didn't I mention this earlier on somewhere else? Sorry, if this is a dupe) Mathias