For what it's worth, these never appear right in Google Reader. In Firefox, How Many Web Services Can One Person Use? is indented, but in Reader, they are all sorta stairsteppy as I scroll down the page. It adds this level of unintended visual complexity that pretty much makes me not want to read it; I decided today to look at the page in a browser to see if it was intentional or not and whoah, that's not how your actual page looks.
Not sure what you can do about it (maybe some tags aren't closed right?) but anyway FYI