Today's Boston Globe magazine has several features about smaller homes. (Note that the link below will only be accurate until the end of this week.)
Here is a link that might be useful: Globe Magazine
Thank you for the link; that was a nice piece.
My husband and I plan to have children soon and stay in our 1400 sq. ft. house for as long as possible.
I think small houses make you think more carefully about how to use the space, and once you do, you find that you don't need a separate room for each purpose.
However, I would still like one more bathroom :)