I'm in a similar situation - 0 friends because I just follow some NGOs and use the API to provide FB login for some pages. I get notifications almost every day and the "unsubscribe" link leads to a page that lets me opt out of the notification type: "Updates about your friends since you logged in", while my notification settings show that I get no Email notifications at all.

So that's the price I pay for allowing FB login on some of our pages.