On Sun, Dec 27, 2009 at 3:34 PM, Istvan Soos istvan.soos@gmail.com wrote:
For the sake of example we would like to automatically convert the page content to a different text and different format (e.g. automatically create text extracts and compile it into a pdf document) and sell it as part of a subscription service or even better as a standalone product. We include all the attributions / links wherever possible, and mark that the source of the product is Wikipedia. What else are we required to do before the sell can happen?
You have to specify the license (CC-BY-SA) of the material.
Is there any fee or percentage that shall go back to mediawiki foundation in such cases?
No, although it will of course be appreciated if you do so on a voluntary basis.
Can we restrict the copy or re-distribution of such product?
No, there is the so-called virality of the license: You are allowed to make derivative works or different versions of the product, but they must also fall under the same license. You have to grant others the same rights to your product that you have to Wikipedia material.