Q:

spoilers in comments

In this question I want to reply to the second part of the answer which is spoilered (as I spoilered my question). But the spoiler markdown doesn't work in comments (>!).
Would it be possible to allow spoilers in comments?

A:

Comments are intentionally second-class citizens and lightweight in terms of implementation requirements and user experience impact. I don't think adding another feature to them will be well-received. If “spoiler” comments existed at all, the whole comment would probably be a spoiler, and even then I don't think the feature has much chance of being accepted.
I don't like it much myself. Comments are already displayed in a low-key way; I don't think you'll be reading them by accident. I'd be quite comfortable with a “comments are always spoily” policy, especially on answers.

