It’s official: Twitter has a Buy button. Rumors about the button have been flying for months, but the company finally took its next step into the world of social commerce — and it could mean big things for small businesses.

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Exitround, a service that matches buyers and sellers of startups and small businesses, is partnering with private equity firms in a new program called Exitround Capital.

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Apple is betting that people want to pay with a tap of the phone rather than a swipe of the card.

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Former Microsoft CEO and new Los Angeles Clippers owner Steve Ballmer and his wife, Connie, have donated another $250,000 to a campaign seeking to expand background checks on gun sales in Washington state.

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The New York comptroller is getting involved in the FairPoint labor dispute, using his clout with the company’s biggest shareholder to ensure the company’s workforce is treated fairly.

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With a Republican’s House majority and Democrat control of the Senate now in jeopardy, this election cycle is producing a pitch battle with daggers drawn on every front. Here is Main Street’s outlook.

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In what has become a painful exercise across Appalachia, Patriot Coal is again telling hundreds of West Virginia mine workers that they could lose their jobs.

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There are lots of reasons why startups fail. Yes, there are. I’m sure I’ve seen them all. But if you dig down a bit, the root cause of most of them is that their leaders choose not to see what’s staring them right in the face.

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Auxilium Pharmaceuticals said Tuesday it is cutting 30 percent of its workforce, about 190 jobs, as part of a restructuring of its operations that will save it at least $75 million a year.

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The U.S. Environmental Protection Agency can’t force several Wyoming power plants to install new pollution-control equipment while the state’s legal challenge to federal regulations plays out in court, an appeals court panel ruled Tuesday.

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