Execs & Accounts: Tribal DDB, R/GA, SpotXchange

Dorian Sweet has left Tribal DDB, where he was executive creative director in the San Francisco office. Sweet, a ClickZ columnist, has led work for clients including Philips and Kingsford.

R/GA hired Jim Moffatt as managing director of its London office. Moffatt joins from AKQA London, where he’s been director of integration since January 2006.

SpotXchange hired two in sales and client services. Torrey Newman-Larson joins as VP of sales, direct response from Q Interactive. Erica Harte will work in client services.

Undertone Networks named Paul Audino to a senior sales position. He joins from IAC Interactive Corporation, where he oversaw several dozen account executives.

IDG hired Peter Longo as CEO of the IDG Technology Network. He was chief sales officer at Inform Technologies.

Imeem hired Courtney Strang as account director of ad sales for the Detroit Area. He was previously SVP and group media director at PHD-Detroit.

Marvel Entertainment named Ira Rubenstein EVP of its global digital media group. The role has oversight of marketing and distribution for interactive, online, and mobile.

Search Discovery named Brian Ussery director of SEO. Ussery was previously with Nurun | Ant Farm Interactive.