I had a gut feeling that grabbing the cell's subview while configuring the cell might not be the best plan. I agree it would be cleaner to calculate the width inside, but I was reluctant to go messing with the existing paradigm too much as a newbie just getting the hang of this code :).

What do you think of calculating it in ReaderPostView, changing `-configurePost:withWidth:` to `-configurePost:`, in addition to changing ReaderPostTableViewCell's `-configureCell:withWidth:` to `-configureCell:` ?

This would also need a change in ReaderPostDetailViewController `-buildHeader` where it calls `-configurePost:withWidth` but I don't think it will break that.