— Twitter: Yahoo (NSDQ: YHOO) senior research scientist Utkarsh Srivastava — whose expertise is in building large-scale distributed systems — is joining the microblogging service in an unspecified role, Louis Gray reports. He confirms the move — on Twitter.
— Discovery Communications: Todd Zander has been promoted to vice president of digital media distribution, tasked with expanding the company’s offerings on online and mobile platforms. Zander was previously director, digital media distribution, and played a key role in the launch of the Discovery Channel iPhone app.
— CBS (NYSE: CBS) Interactive: The company has named Julie Davenport VP and general sales manager of its music group. Davenport had been responsible for developing custom media programs and branding for CBS Interactive websites.
— CBS: As part of a restructuring of the company’s local broadcast operations, Anton Guitano, formerly the SVP of operations for CBS Radio, has been named the chief operating officer of CBS Local Media.