Federico,
This is great news! You are showing the way. I look forward to many more such initiatives, not just in Wikipedia, but anywhere people look for access to knowledge.
The "brand" of Wikipedia is all about having "every single human being can freely share in the sum of all knowledge". There are many organizations, commercial and otherwise, that espouse a commitment to "open". Finally you (and the shoulders you are standing on) are showing how we can systematically message authors to share. This has the real possibility of breaking the monopoly control and pricing of access to knowledge.
Good job.
-john dove