Denton himself has been answering questions tonight in the comment thread over here. I can see what they're trying to achieve; to give the authors of the main site pages (Jez, etc.) more control over the conversation and more incentive to partake in the conversation by limiting the conversation that gets emphasized in the comment section to people the author follows or interacts with. The question in my mind is if what they're trying to achieve is really appropriate for GT. We're all authors here, and frequently the point of the post is to ask for input from the group.