Thinking: is the Like for blogging related to the Linkroll (since a link is like a Like)? I should get an email or notification when someone Likes my post. That’s the feedback loop I’m talking about. And Liking should be 1-click. So is adding to the linkroll 1-click?

It is conceivable that there is simply no distributed solution that can compete in user experience with a closed solution like FB and such. But that doesn’t sound like it would be true.