Finished WWZ
I enjoyed it and gave it 4 out of 5 stars.
To appreciate the social commentary, it probably requires some interest in the, currently popular, zombie genre, (I wonder if there was a tiny people genre in Swift's day?) It is non-partisan commentary so don't expect a conservative or liberal manifesto.
For those with zero interest in such a book, there will be blockbuster film, starring Brad Pitt, released in 2012 :)