My link-post to the “open friends list movement” has two comments on Facebook already and none on ledgards.com. I think what’s interesting about this is that Facebook is acting like a notifier to friends that otherwise might have skipped over posts in their river of news.
You pay more attention to things that go across your FB feed because you (ideally) know the people better. Of course it could just be proof that the only reason I had a bunch of readers before is because I worked at Microsoft… or because I’m maried to Gretchen.