Pater Edmund Waldstein, O.Cist., writing at Sancrucensis, plugs an offshoot of Marrow devoted to Catholic blogs. It is a splendid service, not only because it aggregates our posts, but also because it represents one-stop shopping for people interested in the Catholic blogosphere. Obviously, we think that you, dear reader, should sit down first thing—with your morning coffee and Dunhill, of course—and read Semiduplex. But you could do a lot worse than starting your morning by perusing Marrow.