This is how you post a spoiler:
You put it in brackets like this.
What do spoilers-in-spoilers look like:
[spoiler]Not this part…
but this part.
[/spoiler]
That is how you code spoilers. Important item to note, however: you can see the content of your first spoiler in the mouse-over preview (at least with Firefox running on OSX).
Not sure what keeps it from showing up…
GT