You need to ensure that all the pages that contain user-generated comply with program policies. You need to take special care of the user-generated content. Since the content you create for your blogs are published directly under your supervision. Unlike these pages, the user-generated content is independently on your site or app. Here are some further resources for your reference. 1) Google Adsense policies - User-generated content 2) Common challenges with user-generated content 3) Best practices for managing user-generated content 4) Find problematic user-generated content using the Google site search operator. 5) Content filtering for user-generated content