Books: Sleuthing what Kindle 2 has done for ebook sales [via The Millions] Dance/Opera: Why it’s OK to boo at the opera [via WSJ] Design: Michael Arrington’s Crunchpad leaked [via Wired] Film: Sundance’s executive director Ken Brecher resigns after 14 years. [via The Wrap] Music: The new Hold Steady [via Stereogum] Television: The new crop of sitcoms reviewed [via Slate] Theatre: Aunt Jackie joins upcoming Brighton Beach Memoirs and Broadway Bound [via Arts Beat] Visual Arts: Hearst Castle gives up Nazi-swiped art [via LAT] Web: When technology gets in your head [via BBC]