I know that the code formatting filter ("your post appears to contain code that is not properly formatted as code") is enabled on Stack Overflow.
However, are there any other sites where this filter is enabled? For example, Code Review or Code Golf? Can the code formatting filter be enabled on particular sites on a request basis?
I'm asking because I've seen a few questions about it closed as off-topic as only about a specific site (SO). Are such closures justified?