Re: [Foundation-l] commercial use of wikipedia content

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? Is there any fee or percentage that shall go back to mediawiki foundation in such cases? Can we restrict the copy or re-distribution of such product? For the later, I suppose there is nothing we can do, however this seems to ruin the whole business model, doesn't it?