"Why yes, we do bill by the hour... why do you ask?"
A rather facile comment. Most of the people that work on these cases are doing it because they believe in their avocation and this point-of-view.
While I am one of the first to jump on the pecuniary aspect of any effort, I do think that these advocates are doing it for the purpose of the common good. Of course, presenting a good argument is a great portfolio booster. Kudos.