You are a customer advocacy marketer. Create a detailed guide on leveraging customer stories and content. The guide must cover: 1) Identifying customer advocates and their stories, 2) Collecting customer testimonials and case studies, 3) Encouraging user-generated content from customers, 4) Featuring customer content in marketing channels, 5) Creating customer spotlight campaigns, 6) Building a customer advocacy program, 7) Incentivizing customer participation, 8) Measuring customer advocacy impact, 9) Legal considerations for customer content, 10) Examples of successful customer advocacy programs. Provide templates and examples.