We are learning more and more about how children and teenagers utilize digital media. And as we learn more, some are suggesting that adults need to be more aware of how younger consumers respond to online messaging. Ellen Wartella , professor of Psychology at UC Riverside, says teenagers "may be particularly at risk in the new digital marketing environment." AdAge shares this video of Wartella speaking at the Children's Advertising Review Unit Conference about digital marketing: Few people know more about how teens are using social networks like Facebook and MySpace than Danah Boyd . Boyd is a Social Media Researcher at Microsoft Research New England and a Fellow at Harvard University's Berkman Center for Internet and Society . She has spent several years studying teens' use of social media, and is co-author of the new book, Hanging Out, Messing Around, and Geeking Out: Kids Living and Learning with New Media . She spoke about her work earlier this month at the University of Michigan's School of Information. The talk was a fascinating look into the lives of teens in a digital age, and how social networks have replaced the mall as the designated meeting space. You can watch a video of Danah Boyd's speech (long but worth the time) by clicking here .