In 2010, Foursquare co-founder Naveen Selvadurai believed that his company, and several other social-media upstarts---Twitter, Tumblr, Path---could carve out successful niches against Facebook. But Facebook had other plans. That year the company introduced a feature that allowed users to “check in” at any location, a copy of the main feature of Foursquare’s app.

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The financial industry today looks stable and boring, with a few megabanks ever-more entrenched and markets that may not offer the same risks and rewards as before the 2008-2009 financial crisis but which remain highly profitable for incumbents. That stasis, however, masks looming challenges to the sclerotic incumbents. Two such challenges were much in evidence this past week: Bitcoin and China.

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Caloua Lowe bounds up the rickety, worn staircase of a three-story, red brick building in Camden, New Jersey on a sunny September morning, the wooden steps creaking under the pressure of her red-sandaled feet. The walls display framed, Photoshopped images: a mockup of Vogue, album covers featuring young men standing shoulder to shoulder with rap legends like Jay-Z.

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Silicon Valley oligarchs have plenty of reason to lose sleep these days, but the looming prospect of Nov. 1 has to be high on the list. That’s the day that executives from Google, Facebook, and Twitter are scheduled to testify in back-to-back hearings before Senate and House committees investigating Russian interference in the 2016 election.

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A bipartisan group of senators introduced a bill Thursday that would require online political advertisers to provide additional disclosures about who’s paying for their ads, but the measure may prove a half-step toward preventing foreign adversaries from influencing US elections online. During a press conference Thursday, Democratic Sens. Mark Warner and Amy Klobuchar introduced the much-anticipated Honest Ads Act, co-sponsored by Republican Sen. John McCain.

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Tony Fadell is at the Grove, a spectacularly beautiful country estate outside of London. The event is Founders Forum: the ultra ­exclusive invite-only tech conference. Prince William is in the house. The guest list is lousy with knights and lesser officers of the Most Excellent Order of the British Empire. Marissa Mayer, the now ex-CEO of Yahoo, and Biz Stone, recently returned to Twitter, are mingling with the other hundred or so invitees. But this is really Fadell’s moment.

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When Twitter could take credit for revolutionary political movements like the Arab Spring, it was easy for the company's executives to joke about their liberal stance on free speech. (Twitter, they said, was "the free speech wing of the free speech party.") But things are a bit more complicated now, as Twitter increasingly plays host to bullies, harassers, Nazis, propaganda-spreading bots, ISIS recruiters, and threats of nuclear war.

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Wikipedia, one of the last remaining pillars of the open and decentralized web, is in existential crisis. This has nothing to do with money. A couple of years ago, the site launched a panicky fundraising campaign, but ironically thanks to Donald Trump, Wikipedia has never been as wealthy or well-organized.

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LONGMONT, Colo. — In one back room at Skyline High School, you can learn all you need to know about St. Vrain Valley School District. It’s there that bins of materials sit next to past projects, exposing the district’s DNA. Boxes holding glue, Popsicle sticks, tape, pipe cleaners, compasses, zip ties and rulers lie nestled inside a 6-foot-high, student-constructed rack.

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White-collar automation has become a common buzzword in debates about the growing power of computers, as software shows potential to take over some work of accountants and lawyers. Artificial-intelligence researchers at Google are trying to automate the tasks of highly paid workers more likely to wear a hoodie than a coat and tie—themselves. In a project called AutoML, Google’s researchers have taught machine-learning software to build machine-learning software.

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