[jsprogrammer]

From the link you posted:

>All research papers from Nature will be made free to read in a proprietary screen-view format that can be annotated but not copied, printed or downloaded...

>Annette Thomas, chief executive of Macmillan Science and Education, says that under the policy, subscribers can share any paper they have access to through a link to a read-only version of the paper’s PDF that can be viewed through a web browser.

The person who linked the original article didn't use the special link to the "free, but proprietary" format.