I don't know what Mark and his buddies are thinking, but the Timeline thing is really turning a lot of people off. To be blunt, it sucks. Now word has it that Facebook users have no choice. You're Timelined whether you like it or not.
It wasn't too long ago that everyone "had to be on MySpace." I wonder if Mark & Co. know this. A few tweaks here and there and the Google+ platform may be viable.