Peter Jaros wrote:
What about a second, clearly marked link, to allow people to support Wikipedia consciously? We currently do this for Amazon.com on the Special:Booksources page. I don't know if this would count according to the offer.
I didn't know that we are still doing this on the Special:Booksources page. Are we?
But, in any event, the idea of having two links, one paid and one unpaid, is a reasonable suggestion, except that we aren't talking about a Special:Booksources page but part of the actual content of the article. So it's very different in that sense. The booksources page is not actual content itself, it's an automatically generated 'meta' page.