Duffy & Partners, Minneapolis, (www.duffy.com) has added designers Esther Mun and George Katz, formerly freelancers, and Brad Surcey, formerly at Fallon Interactive.
Milwaukee design firm GS Design and interactive agency Evans Kurtz Group have merged under the GS Design banner. See www.gsdesign.com for more.
Seattle's Hornall Anderson Design Works (www.hadw.com) has been acquired by the Diversified Agency Services unit of Omnicom Group. Hornall's name and location will remain unchanged.