Was this the thread/idea you were referring to?
http://www.firehawkgames.biz/forum/index.php?topic=693.0
Specifically, this post from the original thread that the above link links to
darnest wrote:
My system does that using a mechanic called Story points. Characters can spend them to get a bonus in the current situation, addition info or mechanical bonuses its negotiated between player and GM. What ever the bonus the have players has to add something to their characters background. Whatever they add is accessible to other players and the GM, so it can really expand the ongoing story or give the GM and other players more ideas to do stuff. Characters get more story points the more passions they have. Once spent theya re gone until the next session. '
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So there is another idea for ya to play with.