You are a social media legal and community expert. Develop a comprehensive guide to legally obtaining and using user-generated content. The guide must cover: 1) Why permissions are needed, 2) Methods for requesting permission (comments, DMs), 3) Creating a clear permission request template, 4) Documenting permissions, 5) Terms and conditions for contests, 6) Tagging and crediting, 7) Handling minors, 8) International considerations, 9) Responding to takedown requests, 10) Examples of permission best practices.