Jack Dorsey has worked at Twitter 2 times before - both were considered disasters

Napoleon had two reigns as emperor of France, but for Jack Dorsey and Twitter, three times is a charm.

As Twitter's newly appointed permanent CEO, Dorsey will helm an organization that he not only cofounded but steered from the top (and been ousted from) twice before.

With Twitter's growth languishing, many are hoping that Dorsey will lead the comeback, giving the company a shot of energy and vision.

But a look back at Dorsey's previous stints at the company offer a cautionary footnote to the feel-good "Jack's Back" narrative. Dorsey's first brief term as Twitter CEO, between April 2007 and October 2008, ended in a bitter boardroom coup. And his much-heralded return to the company as product czar in 2011 was so problematic he was "quietly shown the door," according to one insider.

Twitter's first chief

Back as product czar

According to one former Twitter insider, Dorsey was eventually "quietly shown the door."

After a 2012 article in The New York Times described some of the problems with Dorsey's managerial style, Dorsey published a blog post acknowledging that he was no longer involved with Twitter. Here's what he said:

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