Quantcast named TODD TERESI as chief revenue officer. He recently served as senior vice president of Yahoo!’s publisher network.

TAXI New York named RON SMRCZEK executive creative director. He is currently creative director, TAXI Toronto.

ROB CURLEY was named president and executive editor for Greenspun Interactive and CHRIS JENNEWEIN joined Greenspun Media Group as senior vice president and publisher.

Avenue A | Razorfish New York named FRANCIS ANDERSON as vice president of connections planning and PAUL GELB as manager of emerging media.

MICHAEL LAZAR joined Platform-A/AOL as AOL music sales director for the property sales group.

COLLEEN O'KANE has been named chief media officer at True Media. O’Kane was previously senior vice president, director of brand communications at GSW Worldwide.

SEAN MACPHEDRAN, director, creative strategy at Fuel Industries, has relocated from the company's head office in Ottawa, Canada to represent the branded entertainment firm in New York.

St. John & Partners added MIKE D’ABREU as a copywriter in the agency’s creative department. He will service the firm’s Smoothie King and Zaxby’s accounts. D’Abreu joins St. John & Partners after spending four years at 22squared, working on the …

STEPHEN ALLAN, previously CEO of GroupM UK, has been named chairman & CEO of MediaCom Worldwide. He succeeds ALEXANDER SCHMIDT-VOGEL, who has taken on the newly established role of CEO global trading of GroupM Worldwide.

DIY Network named STEVEN LERNER as director of programming.