Regular readers probably recognize him from such Media Blog hits as “Frank Rich Can’t Say the Word ‘Republican,’” “Matthews Movie Montage,” and “Straight From Big Brother, ‘Oh Brother.’” Corner readers may know him by his nom de guerre, Chaka. His official title is NRO Webmaster, but as of today he adds the honorific, “Regular Media Blog Contributor.” His first post as a regular is coming up, and it’s a good one.