In this episode of Content Inc., Joe Pulizzi shares a bit of the Marcus Sheridan story of how he grew River Pools and Spas by becoming the best teachers in their industry. He reminds you that what you sell will probably change over the next few years. But if you are putting a value first approach to your content and becoming the leading educator in your industry, this won't matter. Content that teaches your audience will ensure you will always be relevant to your audience.