What the heck is going on at Zillow? The online real estate giant announced the return of co-founder Rich Barton as CEO, along with a major change in its business model. John Cook and Todd Bishop sort out the news, speculate on the cause, and speculate wildly on what could be next. Plus, Amazon is backing out of a high-profile Seattle skyscraper in the latest sign of its troubled relationship with its hometown. And we say farewell to those cute little Amazon Dash buttons!

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