Facebook on Friday begins rolling out its biggest ever shake-up, in a move observers say will not only profoundly alter how its 800 million users interact with the site, but will keep them coming back for decades to come.
The new "Timeline," revealed last week by chief executive Mark Zuckerberg will also likely shock some users, notorious for backlashes in recent years over even small adjustments to the site, let alone a complete re-think of how their lives are presented to the world. Full story
