This is a great point. When I say based on shared values and contexts, I mean at the community level. So for a community where people discuss Harry Potter boo

This is a great point. When I say based on shared values and contexts, I mean at the community level. So for a community where people discuss Harry Potter books, many members are not going to want to be careful about everything they say for fear of spoiling someone else's experience. But some people might want to experience reading the books for the first time with other people in the same boat as them. If this community was well managed, they might solve this by: - Writing into the community guidelines that spoiler tags only need to be used when discussing something that's NEW. - Users have the ability to have spoiler content hidden/shown by default. The key here is that the definition of what a spoiler is, is still defined by the community, not the individual. - Creating a separate area within their community for new readers to chat about the books, where discussion about events in future books is not allowed. By joining the community, and agreeing to the community guidelines, you are agreeing to abide by an objective definition for what's appropriate within that community. If you don't agree with those guidelines, you probably don't want to join that community. But without any shared guidelines, you do trend towards anarchy. Certain topic/niches will approach it faster than others.