Yahoo director of search marketing Dave Roth, who spoke and moderated at the recently concluded PubCon search and social media marketing conference, took time out from his busy schedule to speak with WebmasterWorld video content producer Vanessa Zamora during the Las Vegas event. Roth, who guides both search engine marketing (SEM) and search engine optimization (SEO) strategy for Sunnyvale, California-based Yahoo, spoke with Zamora about Yahoo's global "It's You" marketing re-launch involving television and other media that began in September and which will continue into 2010, and how that campaign has involved many local SEM efforts in countries worldwide. During their PubCon Las Vegas 2009 interview Roth told Zamora about his Industrial Strength SEM blog, where he has written about how Yahoo overcame some of the difficulties it encountered during its re-launch. Roth also spoke about how the PubCon Las Vegas event made it clearer than ever to him that large in-house Web site SEO has improved ...