Journalists using social networking sites, photo sharing sites and other new media technologies to gather information face new ethical challenges. Journalists are being forced to re-evaluate such questions as “What is in the public domain?” and “Is it okay to publish information obtained by ‘lurking?'” This Online Journalism Blog post describes some of those challenges and reviews a new book called Online Journalism Ethics: Traditions and Transitions by Cecilia Friend and Jane B. Singer that journalism educators may find helpful in adapting their ethics courses.