It's easy to get excited about the 'new new thing' and forget that principles don't change that quickly. So when Anna Farmery described her farming ancestor bringing cattle to market, she said that he would be judged on his reputation. You see, reputation and social networks have always existed.
After a century of mass production supported by mass advertising, we're returning to a more organic approach to marketing and promotion using social media tools like blogs and podcasts. (To keep the analogy going, some farmers are returning to organic principles in order to capture a more lucrative and sustainable niche. Remember that all farming was once organic so this approach is old, not new.)
One of these organic marketing promotional tools might be podcasting, but it is only a tool, not a strategy.
Most engaging of all, Anna spoke for over 90 minutes with little need for technology. Social media is often merely an attempt to replicate the authentic experience of people talking to people.