The subscription/gateway seems to be gone. And I can't even find where I set it up in the first place. I probably lost it when I refused one of the force-you-to-go-public settings. I'll just cross-post via Twitter then.
Update 2010-05-24: This seems to be working again and no posts were apparently lost. I'm not sure why. Maybe a long delay. It seemed like it was more than a day. Maybe Facebook misconfigured their own privacy settings.