I have added spoiler boxes to the forum. Spoiler boxes hide text from being displayed until the user chooses to expand the spoiler box, which exposes the hidden text. The most common use for spoiler boxes will probably be to hide long lists in WIP topics such as changelogs. But I'm sure your creative genius will strike at the right moment.

To use a spoiler box, you simply click the button in the post toolbar. This will create:

[spoiler][/spoiler]

Which looks like:

To add text to a spolier box, you simply put it between the spoiler tags like so:

[spoiler]Example Hidden Text![/spoiler]

Which will look like this:

You can also change the title of the spoiler box:

[spoiler=Changelog:]
[list]
[li]Added Spoiler Tags on Aug 28th 2012[/li]
[/list]
[/spoiler]

Looks like:

Enjoy yer boxes   

The permissions of the spoiler boxes have been fixed. Everyone should be able to view the contents of spoilers now.