User blog comment:NOBODY/Another possible spoiler solution/@comment-3060206-20120803201624

I spent a bit of the morning and just now with the SpoilerAlert code on my Test Wiki and I'm happy to say that it works! The spoiler code is triggered whenever you add Category:Spoiler.

However, I noticed that this code fails to work on Internet Explorer. I'm not sure if anyone uses it, though, and this IE is pretty old anyways. I also find that viewing Wikis on IE is glitchy in itself already. Have a look at pages here and tell me if they work for you.

Another thing: if a user clicks "yes" on a particular page, the code will remember their settings for that page, meaning they don't always have to go back and click "yes" every time they visit it. The settings can be reset if a user clears their browser cookies.

So...what do you think?