It seems Tim Berners Lee's worry about the effect of Facebook towards less open Internet is getting more true than ever. Are there significant actions we can do about this?
Large Internet email providers (Google, Yahoo, Hotmail) should come up with something similar like address auto-fill on third-party sites (with appropriate security & privacy implementation). They might even want to team up to counter Facebook's rise--after all, Facebook is now one of their largest competitors on the Net. (I am aware that Microsoft is an investor and partner of Facebook; so Hotmail might be less likely to come on board.)