I am delighted when my Facebook page becomes the site for serious economic discussion. Here is a great example.
Miscellaneous Notes about Facebook and Tumblr: A reminder to everyone: my Facebook page is totally public.
By the way, I put links to all of my blog posts on my Facebook page. So anyone who wants to follow my blog on Facebook can do that. At this point, I routinely accept friend requests from everyone who seems human (as opposed to a bot).