Sorry for coming in late on this but there have been any number of irons in the fire and at some point they have to be tended to.
The blogs are part of the Patron benefits, and are referred as stated below by one of the other posters. One of the reasons we limit blogging and comments to Patrons is, well, because they support the site financially and it's a nice way to limit the chatter and blog-jacking. You'll notice we have many threads here that kind of meander around and we wanted to keep the blogs as clear from that as possible. This is a way for our Patrons to put their own, concise comments, thoughts and ideas out there for other Patrons to see and comment on without the general free for all we have in the forums.
That's it in a nutshell.
Oskaar