Cool it has been implemented.
I like it
Most of my text would not be spoilers but there may be a small part of my question which may mention something that could be a spoiler.
It would be great if I could hide the text so you need to mouseover or click to see the spoiler
I am thinking this could be a feature. The question shouldnt be marked as a spoiler if it isnt and is just mentioning something that could be a spoiler to someone not as far in the game.
This request is in a similar spirit for something similar that was implemented for Math.SE (The pretty-formulas-display extension)