Digiday: BuzzFeed has mastered the art of distributed publishing, using platforms like Facebook, Snapchat and Pinterest to amass massive audience attention. But the publisher must navigate a thorny transition, as it seeks to follow the Silicon Valley credo of upending your business before others do so for you. Traffic to BuzzFeed’s owned properties, desktop and mobile, is flat. Plus, BuzzFeed is said to have missed its revenue growth goal last year.