The VIA Group hired Greg Davis as its chief growth officer. He joins the agency from The Kaplan Thaler Group, where he served as managing director, business development.
MobiTV promoted Ray DeRenzo to chief marketing officer.
Colle+McVoy has hired Shawn Oreschnick as a senior planner.
DDB Canada hired Tony Johnstone as senior vice president, director of strategic planning. Prior to joining DDB Canada, Johnstone managed the integrated planning practice at Grey Advertising in Toronto.
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.
Sam Linsky was promoted to senior vice president, current programming, TNT and TBS. Linsky most recently served as vice president of current programming for TNT.
NetShelter Technology Media named Michele Sweeney as chief sales and marketing officer. Sweeney joins the company from Nimblefish Technologies, where she was executive vice president of marketing solutions.
Cheil Worldwide named Jason Zhao as COO and executive creative director for its Cheil Worldwide China network. Zhao most recently served as executive creative partner for Publicis China Beijing.
Euro RSCG Discovery hired Bruce Wilkinson as senior vice president, sales. Most recently, Wilkinson was vice president and business development leader at Experian.
David&Goliath hired Amanda Andre as associate planning director for the agency's Hispanic division, DñG. Previously, Andre worked at Conill / Saatchi & Saatchi as strategy director on various Toyota divisions within the U.S. Hispanic marketplace.