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This week's Mediatwits podcast includes a Yahoo, a shocking book, an academic appointment and a D.I.Y. magazine kit. Our roundtable includes Mark Glaser hosting, along with Seattle Times' Monica Guzman, Guardian's Ana Marie Cox, Reuters' Felix Salmon and USC's Andrew Lih. Our special guest is author and digital thinking Douglas Rushkoff, whose latest book, "Present Shock," looks at our overloaded, overmediated lives. We also wonder what Yahoo is doing, buying the Summly app and its 17-year-old CEO for $30 million, and considering a purchase of Dailymotion. Plus, Columbia appointed its new dean, Steve Coll, who took flak for not having tweeted, and Flipboard 2.0 lets anyone create their own digital magazine quickly and easily.