The Weekly Listen: The (not) sharing economy, Amazon Pharmacy and social media change

eMarketer principal analyst Mark Dolliver, junior analyst Blake Droesch, and vice president of content studio at Insider Intelligence Paul Verna discuss the we-used-to-share-things economy, Amazon's new online pharmacy, Twitter keeping some election tactics, the sudden surge in disappearing messages, the share of Facebook content that's political, why movie previews are called "trailers," and more.

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