2009/1/20 Anthony wikimail@inbox.org:
Is the question clear? Maybe I should be even more specific. How would one go about using content from Citizendium in Wikipedia, if Wikipedia relicenses content under CC-BY-SA? How would a third party go about using the combined work? How would the attribution rights of the Citizendium contributors be respected?
I would say in part this is a problem that the community can collectively solve, as it has historically: We've incorporated information from other GFDL works and attributed them, for example. And we can apply common sense. Contributors to wikis typically have different attribution expectations than authors of monographs who have no connection to the wiki world. Both authors and re-users will express objections or support for different models. And wikis will probably want to develop reasonable standards between them that facilitate their mutual goals.
I do believe there are probably technical improvements that we can make to further support free information exchange, such as a richer page history feature, or a metadata blob for this kind of information. But I don't think that such improvements are a necessary precondition: people will continue to use footers, page histories, and talk pages to denote such information. Attribution standards can always be revised based on the respectful dialog between the involved parties. Resolving legal incompatibility, on the other hand, is a necessary precondition for even having these conversations.