The Ticker: Harry Potter presser; Facebook’s virtual worlds; AP staffers on socnets; Cow Appreciation Day; ‘News of the World’

Marie ClaireFirst Look! Inside the Harry Potter Press Conference

All FacebookREPORT: Over 27 Million Use Facebook’s Virtual Worlds

Yahoo! The CutlineAssociated Press warns staffers not to express their opinions on Facebook and Twitter

Marketing PilgrimChick-fil-A Turns a Made-Up Holiday into a Marketing Bonanza

Washington PostPhone-hacking scandal is biggest PR disaster of Murdoch’s career