The problem I have with this (which is probably one of many) is that Facebook is trying to build a UI on top of a UI. IMO, Home doesn't simplify your life. Instead making you dig through yet another screen before you can access your information. Every Facebook press conference, demo and presentation always show wonderful pictures of people doing fun and exciting things that "you just gotta see!" But the reality is that people want to check their Facebook all the time. They do not want to be on Facebook all the time. Hey, I like checking my Facebook but I have two friends that just had a baby (and another next month). I don't want or need my lockscreen spammed with baby image #2,398. I don't need to be alerted that my friend "gave up Mountain Dew" or what he had for dinner. Those are not things you just gotta see. Those are things that are best checked, not forced upon me using an invasive UI and alert system. This is great for the full time Facebooker but I don't see many people sticking with Home after their initial trial run.