Former comedian Dick Costolo will “step down” (Ha Ha) from his CEO perch at Twitter, a company that only recently started making money and hasn’t been making enough of it. His replacement is Jack Dorsey, former poet, and notorious monster and screwer of friends.

Maria Bartiromo, CNBC's disgruntled "Money Honey" pioneer, jumped ship from CNBC in November, ending her twenty-year reign at the business news network. Lucky for her, she landed an anchor job just across the street at FOX Business, where she's the weekday host of "Opening Bell."

After a conspicuous 12-year absence from his desk, newly departed New York City mayor Mike Bloomberg returned to work this morning at his flagship media company, Bloomberg LP, in midtown Manhattan. Executives welcomed him with prosecco, cheers, and, we imagine, bated-breath obscenities.