My objection is that people attempt to publicly share private articles. If you're a member of a private website (which for all intents and purposes, a paywall is), then by sharing it with the public you're assuming they can read it. Which without circumventing the paywall, many won't be able to.

Sure, some people will have subscriptions, others will have found the article unlocked in one form or another, but still I think it's pretty poor form to share something closed source, if you will.

Here, look at this: http://www.checkupdown.com/accounts/grpb/B1394343/