Yes, that is exactly the purpose of LWN's subscriber links. It lets subscribers share content with non-subscribers in a "controlled" manner, which I guess means LWN can track usage and so on. I think it's awesome; thanks for sharing, rythie.
"Where is it appropriate to post a subscriber link?
Almost anywhere. Private mail, messages to project mailing lists, and weblog entries are all appropriate. As long as people do not use subscriber links as a way to defeat our attempts to gain subscribers, we are happy to see them shared."
As long as the posting of subscriber links in places like this is occasional, I believe it serves as good marketing for LWN - indeed, every now and then, I even do it myself. We just hope that people realize that we run nine feature articles every week, all of which are instantly accessible to LWN subscribers.