Twitter has endured an exodus of executives and managers from the company's ranks following its IPO. And those departures have become such a problem, the Wall Street Journal reports, the company is turning resigning leaders into corporate ghosts.

PSA: On today's earnings call Twitter CEO Dick Costolo was saying "eccentric circles" of users, not "concentric circles." Either way, Twitter's stock is down despite meeting expectations. If only Wall Street cared as much about circles as it does about MAUs.

If you're one of Twitter's 255 million monthly active users or MAUs, you may have noticed company insiders sub-tweeting Wall Street. Only a suit, they scoff, would fail to recognize the value of a company your mom sees flashing across her TV screen.

Twitter just released its first quarterly earnings report. With earnings of per share of 4 cents on revenue of $243 million, the company "well surpassed" estimated revenue, however user growth has slowed. Stock dipped on the news. Perhaps Dick Costolo can use his stand-up skills during the earnings call to convince Wall Street otherwise.

Turns out, Twitter CEO Dick Costolo does have a sense of humor! Thinkfluencer @ProfJeffJarvis is back in action. The parody account's creator, Rurik Bradbury, said there was no word from Twitter, the account "just came back to life again."

Twitter CEO Dick Costolo used to do improv at Second City and likes to say stand-up comedy taught him everything he knows about business, but his joke reflex fell painfully flat yesterday. (The full NSFW Storify is below.)

Over the weekend, Twitter CEO Dick Costolo was pummeled after his company's public filing exposed the makeup of the board of directors seated atop his $20 billion real-time empire: All white and all male.

Twitter, a company of around 2,000 employees, doesn't have a single woman on its board, and very, very few female executives of any kind. After the New York Times ran a pointed article to this effect, the company's CEO Dick Costolo went on the (Twitter) defensive.