[Idea] Spoiler formatting option

On a lot of game forums I've seen a lot of great readability and creativity spawn from spoiler (hidden text) options. I know I am not the first person to ask, but any plans on that for the Beta at all?

For anyone who's curious, if a spoiler was added I could do this:

[spoiler]** Hello world, ahahahahaha it's a programming joke.......okay I'm done.... **[/spoiler]

and all of the bolded text would not be able to be seen unless an interactive button was clicked within the post itself. Sort of a small miniaturization for a certain block of text if you will.

I don't have any clue how difficult this may be, but as someone who regularly posts very very wall o' text esq posts, this would be invaluable for me at least.