I've always felt spoiler tags were a must for any forum, especially one talking about specific things.
I was stunned when I found [SPOILER] did not work here. I use it often for Images, Long posts, or side messages I just throw in with something else. [SPOILER] is my friend, so much so I never actually use a button to click and add it, I manually enter it all the time. I had to edit a post I made earlier because I added [SPOILER], when I saw it the [SPOILER] didn't take effect so I removed the whole thing, Spoiler'd text included.
So, yes. Cipher supports this request with her limited/No influence on these boards.