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An exclusive podcast with Bob Rosenschein PLUS a look at some recent mobile advertising stats from the U.S., Vietnam, and Japan. The 450+ attendees at Think Mobile that descended on NYC in March can count themselves lucky. We were treated to an excellent line-up of 60+ top-notch speakers, chosen by my esteemed colleague Matthew Snyder, Founder & CEO of ADObjects, a strategic cross-media consultancy, for their insights, ideas, and willingness to share both. Feedback from my panel on Mobile Search & SEO has been overwhelmingly positive, in part because Matthew and I brainstormed and purposely brought together an eclectic mix of individuals passionate about their work and the mobile industry at large. Today I kick off this "mini-series" with Bob Rosenschein, Answers Corporation CEO and mobile search "guru" (my description- he's far too modest). The company's social search service WikiAnswers.com has seen some stellar growth, according to comScore. In March, the measurement and market research firm reported that WikiAnswers.com U.S. unique visitors reached nearly 19 million in January 2009, compared to 729,000 in December 2006. I caught up with Bob to get the inside track on his company's mobile ambitions, discuss the key criteria for an optimal mobile search experience, and the role of mobile advertising in the scheme of things. Listen to the podcast. [16:18]

Hot off the presses today, I see the Mobile Marketing Association (MMA) has released a 10-page white paper on mobile search, developed by the MMA’s Mobile Search Task Force, chaired by AOL and JumpTap, and in collaboration with other MMA members including Microsoft, Nielsen Mobile, Qualcomm and Yahoo.

The valuable primer walks us through the opportunities and challenges for mobile operators, marketers and portals/publishers. The document takes a balanced view, reminding mobile oper…