The precise nature and scope of Writers.SE, as a Q&A resource for writers, is not always clear or intuitive to newcomers. Some types of questions seem appropriate, but through experience have been designated as off-topic.
What are the categories of questions that Writers.SE has ruled off-topic, despite their relation to writing? One reason per answer, please (to facilitate linking).
This question should serve as a resource collecting the results and current status of Meta discussions, for easy reference and to help newcomers understand the site's unique policies.