Is there an obvious way to only allow registered/logged in users to add comments to blog entries (to avoid spam, etc.)? I'm using a custom comments form on my regular pages (based on the PageComments example found in the forums here) and I just add the following code to only show to comment form when appropriate:
base.AllowComments = HttpContext.Current.Profile.IsAnonymous ? false : true;
Since I have no code behind for the blog pages, though, I'm not sure how to go about this? It's probably a good option to add to the standard blog config window in the backend ("Registration required to comment", etc.).