TBWA Worldwide has opened a Media Arts Lab. The new group will be led by JAMES VINCENT as president and DUNCAN MILNER as executive creative director.

GINA BARRON has been promoted to vice president of client development at MoreVisibility.

STEVE HORN has been named central region sales manager at Mountain Sports Media. Most recently, Horn served as a sales executive for MNI Time Inc. Prior to that, he was a national sales executive for USA Today.

BILL BINAN has joined AllBusiness.com as eastern sales director. Binan joins the company from Vibrant Media where he was senior sales manager. ANNE MARIE ST. JOHN-BROOKS has been named western sales director.

Klipmart Corporation has opened an office in London to be helmed by BECCA RATCLIFFE, who worked at Klipmart in New York several years ago and recently left Grey London where she served as account manager.

Radiance Technologies has named KAY KIENAST chief marketing officer, MIKE CASTLE vice president of business development, and MIKE CATALANO vice president of engineering.

Discovery Communications has promoted SCOTT KOHN to vice president, Midwest sales region, and JILL BUZAS to director, Midwest sales region, advertising sales. Previously, Kohn served as vice president, southeast sales region, and Buzas served as account executive, Midwest sales region.

DANIELLE GONZALES has been promoted to senior vice president of Tapestry, the multicultural division of Starcom MediaVest Group. She will continue to serve as director of investment and operations at the agency.

DAVID MURNICK recently joined Time Warner's Time Inc. Interactive division as director of ad operations. Murnick joins the company from CBS Digital Media where he most recently served as director of ad operations/client services.

SUE PICARD was named Midwest and west coast sales director at BabyZone.com.