DISQUS

Little bit late, but this is interesting. It would definitely work for the "cool" brands, but what about on the flip side? Facebook already alerts users when their friends leave groups and removes other add-ons; will it likewise announce when a user is no longer a fan of a brand or product? It seems like this could accelerate the product life cycle, particularly in the later stages, and be very dangerous for the brands in question.

That's a really great observation. I too am "old school" on Facebook and have been guilty of opposing many of their changes. Your observation about us being slow to adopt is very true, with the notable exception of those that are still in school. The only thing I've added is the Causes app (as a non-profit marketer, I felt obliged to do so!) but those on the long road to graduation seem to be really excited by these new programs.