I beg to differ. It's exactly the thing to do. Our only option is to vote with our proverbial wallets, and in Facebook's case that means leaving the site entirely, and not just deactivating, but DELETING, Facebook accounts, and encouraging others to do the same.
How To Delete Your Facebook Account: http://www.facebook.com/group.php?gid=16929680703
Believe it or not, there is a social web beyond Facebook.