A person could go mad trying to pinpoint the moment he lost a friend. So seldom does that friend make his feelings clear by sending out an e-mail alert.
Its not just a fact of life, but also a policy on Facebook. While many trivial actions do prompt Facebook to post an alert to all your friends adding a photo, changing your relationship status, using Fandango to buy tickets to Paul Blart: Mall Cop striking someone off your list simply is not one of them.
It is this policy that Burger King ran afoul of this month with its Whopper Sacrifice campaign, which offered a free hamburger to anyone who severed the sacred bonds with 10 of the friends they had accumulated on Facebook. Facebook suspended the program because Burger King was sending notifications to the castoffs letting them know theyd been dropped for a sandwich (or, more accurately, a tenth of a sandwich).
Link.
Gotta love modern day marketing schemes!