In April 2007, Obvious, LLC spun off the service as a separate entity under the name Twitter, Inc., with Jack Dorsey as its CEO.

2007年4月，很明显，有限责任公司分拆的服务作为一个单独实体的名义，Twitter的公司，与杰克·多尔西担任该公司首席执行官。

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In March, Mr. Costolo brought back Jack Dorsey, Twitter's creator and CEO of mobile-payments company Square Inc.

WSJ: New Financing Values Twitter As High As $7 Billion

But the opening morning session of the conference, which featured Jack Dorsey, co-founder of Twitter and CEO of mobile payments startup Square, Newark Mayor Cory Booker and venture capitalist Ben Horowitz of A16z felt more like a civics lesson in how technology should be used for the greater good.

FORBES: Twitter's Dorsey Calls Himself An Accidental Entrepreneur, Newark Mayor Booker Calls Zuckerberg an 'American Hero'

Meanwhile, co-founder Jack Dorsey is still chairman at Twitter, while he is also CEO at payments start-up Square.

FORBES: Biz Stone Steps Down From Twitter, Re-Starts Obvious Corp.