By Cheryl Conner, Forbes.com

I heard from my friend and former colleague Don Osmond this week about a marketing session he directed at SXSW. He’d expected the topic–#StoneAgeMarketing-to draw 200 people. To his surprise, 1,000 attended. (Producers found another room. It was fine).

I have known Don (yes, the oldest son of entertainer Donny Osmond, who appeared on the panel as well) since our work together in my agency SnappConner PR from 2007-2009. One of our colleagues, Brandon Carter, had lovingly named him the “Donfather.” The moniker has continued to stick in years since. Now a husband and father of two, Osmond leads a marketing company of his own, OzComm Marketing, in Texas.

For the panel, Osmond and father Donny joined neuroscientist Shonté Taylor and CMO Lead of Microsoft Jeff Marcoux. The high interest underscores the reasons a 15,000-year-old strategy continues to be so powerful today, as follows.

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