Inbox Zero in the New York Times

The idea of Inbox Zero (originally from Merlin Mann) has made the New York Times. The author talks about the system he uses to clear his inbox and keep it empty.  I see this idea as becoming more and more important, as email becomes the ubiquitous communication tool.  Another topic on my mind recently has been getting necessary responses to emails.  It seems to me that since Blackberries and iPhones have become popular, people constantly check for new emergency emails, but they never go back and empty out their inbox of the emails they read on the road but didn’t take action.  Is there an easy way to remedy this?