I have nothing against Duffbert - really! I think he's a stand-up guy. I appreciate his interest in doing book reviews but I really only want his posts on everything else. To make it possible I created my very first YAHOO! Pipe. It's so very cool it's almost indescribable. What I did was to add a feed component with the URL of Duffbert's main feed, added a filter component to block all items where the title contains "Book Review" (the filter component understands that it is filtering a RSS feed and gives me the fields from the feed to filter by) and pipe that to the output (see below). Simple and effective.
Once the pipe had been created I simply subscribed to that feed instead. What's really cool is that if I would rather have a JASON feed to include in the web-page I simply have Pipes change the output format for me! Sweet!
If you haven't looked at YAHOO! Pipes yet you really owe it to yourself to do it.