Here’s an interesting coincidence: Over last weekend, though for some reason my RSS reader didn’t get it until late Wednesday, the new publishing industry gossip blog Slunch openly speculated about the rapidly revolving door at Dutton and Gotham, two imprints at the Penguin Group. “An insider over at Penguin reports to us that the turnover is something like a person a month,” says one of the pseudonymous bloggers. And, lo and behold, the mediabistro.com job board added a listing for a new opening in their shared publicity department yesterday afternoon. Hmmmm.