The FeedRoom hired David Pearce as vice president of product management and Lisa Clark as vice president of marketing.

Stuart Colman was tapped as head of operations of AudienceScience UK.

Euro RSCG Chicago hired Alexis Chiagouris and Rina Mallick as digital strategist and digital creative director, respectively.

AOL's Platform-A promoted Mark Ellis to executive vice president of sales.

Cellufun hired Neil Edwards as chief executive officer. Most recently he served as the founding CEO of dotMobi.

Jennifer Rhodes joined Direct Online Marketing as director of paid search strategies.

Brian Cohen, Robert Lasky and Peter Hill formed Porterhouse Digital, a boutique media and marketing agency providing a full range of integrated business strategy and marketing services.

AdGent 007 hired Bill Blummer as vice president of U.S. sales. Blummer joins AdGent 007 from CBS Digital Media, where he directed national online advertising sales.

Cactus hired Stephanie Shawn as interactive director and Vanessa Louis as account executive.

The Philadelphia office of Razorfish promoted Joshua Palau from group director to vice president of search engine optimization, and Matthew Maynard from account manager to senior account manager.