Argument against: This is arguably a subset of the tag Moral Philosophy.
Arguments for: This seems like an important subset, which there are several Forum posts about, and which some people might appreciate a specific tag about (e.g., if they’re beginning to grapple with meta-ethics and are less focused on moral philosophy as a whole right now).
(Update: I’ve now created this tag.)
Meta-Ethics
Argument against: This is arguably a subset of the tag Moral Philosophy.
Arguments for: This seems like an important subset, which there are several Forum posts about, and which some people might appreciate a specific tag about (e.g., if they’re beginning to grapple with meta-ethics and are less focused on moral philosophy as a whole right now).
Some posts this should include:
All posts in the sequence commencing with this one: Moral Anti-Realism Sequence #1: What Is Moral Realism?
Morality vs related concepts
Maybe Hi, I’m Luke Muehlhauser. AMA about Open Philanthropy’s new report on consciousness and moral patienthood (due to some comments there and some parts of the report)
Maybe a bunch of stuff on AI alignment, cause prioritisation, and/​or moral uncertainty?
Maybe Principia Qualia: blueprint for a new cause area, consciousness research with an eye toward ethics and x-risk