Some rather surprising media news to share this afternoon: Howard Kurtz, who has been a reporter and columnist at the Washington Post for 29 years, will be leaving the paper to join online news site The Daily Beast as its Washington bureau chief. Kurtz, who is also the host of CNN’s Reliable Sources, will report on and analyze national politics and media in his new position. In an official statement on the Daily Beast’s site, Kurtz cited “the challenge of fast-paced online journalism” as one of his main reasons for moving from the Post.