Nature enables sharing of articles

The journal Nature now enables subscribers to share articles for free though hyperlinks to a proprietary document format. The hyperlink to the article can then be subsequently shared by anyone. A year subscription to Nature costs $200 and an article costs around $30. While this is a somewhat awkward model in my opinion, I appreciate that such a prestigious journal can demonstrate some flexibility and adapt to the changing publishing business.
Here is a link to a paper on the identification of the remains of Richard III in the proprietary ReadCube format.