Is there an option in your site code that just isn’t turned on, like “bold” or “italic”, that would let posters format part of their posts as spoilers (i.e. hide the text unless a reader clicks on it)? I know this isn’t primarily the kind of site that needs it, but there are some discussions of books/tv/movies in the Parent area that could benefit from that option. Additionally, it can also be useful to hide long text/pictures so a user can only display if it’s something they’re interested in. This seems to be a standard option on pretty much every forum I visit, and I wonder if the option is there but just not enabled.
Edited to add: What do you know!
Summary
Thank you cc_jon!