Magazine world view: Newsweek sold; USPS bites back; Glamour hits iPad

Forbes blogs to get a big upgrade, every reporter will have one (Business Insider)
Media companies try getting social with Tumblr (New York Times)
Newsweek sold to Sidney Harman (Folio:)
Griffin out as Meredith National Media Group president (Folio:)
Is Flipboard good for publishers? (eMedia Vitals)
USPS bites back at Affordable Mail Alliance (Audience Development) 
Art Directors Club announces