World view: Readers share data; b2b digital rev up; RDA picks new CFO; kids' apps

• Report: 40 per cent of app users opt to share data with publishers (Audience Development) 
• Why do we need a postal service? (Buzz Machine)
• Primedia sold to TPG Capital for $525 Million (Audience Development) 
• B-to-B digital revenue up 15 percent to $4.6 billion in 2010 (Audience Development) 
• How the postal service subsidizes The Wall Street Journal -- and Why It Should Stop (Dead Tree Edition) 
• Reader's Digest Association taps Paul Tomkins as CFO (Folio:) 
• Source Interlink positions itself as “Full Service Creative Agency” with acquisition (Folio:) 
• Sucker 'Punch'! iPad magazine brewing from Dany Levy and Maer Roshan (The New York Observer)
•  Sir Fred Goodwin gagging order partially lifted by high court (Guardian) 
• Children's magazines cater to true early adopters with mobile apps (MediaShift)