Twitter I expect to be a place where I am following strangers. Facebook on the other hand.. I am very much surprised to see that she could not identify people that she has 'friended' (the 'all black people look alike' Facebook bug aside). Why click 'friend' if you don't actually know the person?
Again, I understand that is not the whole point of the article but it is worth mentioning that Facebook has been pulling this stuff for years and for her to get ticked off about this stuff now seems a bit ridiculous.