BoingBoing Store comments are auto-closed?

Sorry, I should have been more clear about the example I was pointing at. This article, this article, this article, and this article are all attributed to different authors (Wink, Laura Anderson, Boing Boing, & Sword and Laser, respectively) on the BoingBoing front page. But here on the BBS all of the associated discussion threads are started by @boingboing.

How come Wink and the others have their discussions started under the generic boingboing username and other authors without BBS accounts fall into a failure mode?