WPP Group's branding and identity, healthcare and specialty communications group, which includes its direct, digital and interactive agencies, saw like-for-like revenues decline 6.2% for 2009 compared to the year before. The holding company's overall like-for-like revenue was down 8.1% for 2009

Although 80% of US marketers say that the Hispanic market will impact their products and services in the next five years, half of them are not marketing specifically to the demographic, according to a report from independent Hispanic agency Orci.

Arnold Worldwide has named Nick Dutton managing partner for its global network. Dutton will join Arnold from sister agency Euro RSCG London, where he ran Euro RSCG Luxe, a division catering to worldwide luxury brands.

Hunger relief nonprofit Feeding America has chosen Merkle's Response Management Group to handle replies to its direct mail campaigns. The agency will be responsible for capturing data, acknowledgment fulfillment and call center services.

Morgan Stanley has named The Martin Agency its agency of record for creative, planning and digital after a four-month review process.

E-mail marketing firm ExactTarget has acquired Twitter-management platform CoTweet for an undisclosed sum. CoTweet, a Web-based application, will retain its name and office in San Francisco. Its seven full-time employees will be integrated into ExactTarget's company structure.

Relationship marketing agency Merkle has hired Mark Weninger as its first chief creative officer. He is overseeing all creative from the company's seven offices and reports to co-presidents Tim Berry and Patrick Hennessy.

Omnicom Group unveiled its newest agency, known as Retail 3, this week. Launched February 1, the Troy, MI-based firm offers direct, creative, digital and media capabilities to retail clients. Harold Kobakof, former chief retail officer at BBDO Detroit, is leading the agency.

Interactive agency Razorfish introduced a dedicated healthcare division on March 1. Known as Razorfish Health, the practice is based in Philadelphia and led by GM Katy Thorbahn. It is the second interactive health practice owned by Publicis Groupe, joining Digitas Health.

The Martin Agency has won digital, creative and media planning duties for Johnson & Johnson brands Tylenol and Motrin, an agency spokesperson confirmed.