Jed Williams "unpacks" Facebook's advertising business, starting with the Sponsored Stories ad unit, which taps into content in news feeds. It’s the ad unit inserted into desktop and
mobile newsfeeds. In an earnings call, COO Sheryl Sandberg shared both quantitative and qualitative information about the ads. She said the ads generate about $1 million in daily run rate, with half
occurring on mobile. Williams provides other details too.
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