Interesting idea. Would work best for short posts, though.

Unless of course you had the option for multiple "decisions".

"X has opted for the Great Old Ones to decide seven times.
First is a 7. Sub-par result.
Second is a..."

This could then be followed up by a post written with those results taken in mind, say if the post was a conflict of sorts.

This would fit well in with the dice roller that has been proposed (but not really designed).