Excellent posts, Karen and Leah!
Leah, I think we are definitely moving in the direction of multi-generations under one roof again - with the economy being so difficult for people, I see this happening more and more. My husband's actually has four generations living under one roof. FOUR!
And right now he and I are living with my parents.
If people can live in peace this way, it's a great way to save money. The peace part is hard sometimes...