North of Nine Communications, Burson-Marsteller‘s recently launched tech firm, has added audio communications company Plantronics to its roster. With a message of tech innovation and corporate leadership, the firm will execute a media campaign led by Mary Ritti, a partner at North of Nine, and Russell Castronovo, Plantronics’ director of global comms.

US Mortgage Corporation has chosen Rubenstein Public Relations for media relations surrounding the company’s home mortgage financing services.

Town Sports International, which runs 159 Sports Clubs in New York, Philly, Boston, and Washington D.C., has chosen Coyne PR as its AOR. The firm will work on both traditional and social media work. [via PRWeek]

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