It's been poined out that comments for the blogs have been disabled. My bad.
I'll be looking into changing that so all of you with blogs that are used to not having to moderate your blog... you may want to start figuring out how do do that and make sure your email addresses are up to date so that when someone comments on your blog you'll get an email notification of the comment. No good email = no email notification.
If you want to disallow comments after the change you can do so by chaning your settings under "Your Blog Settings" like so:
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