I'm not sure if this is what you mean, but for example:

"Give me a list of search engines sorted from best to worst" (an ambiguious english expression - http://www.tallstreet.com/view/Search_Engine/ )

Then people nominate answers (by investing in them), which get weighted by how many people nominated, how they weighted different answers compared to each other, and also takes into account the persons "judgement history" (net worth - i.e. if they have been previously good at making good nominations they have more authority)

An then when people run the "algorithm" they rate the output which is fed back to the nominators who are rewarded or punished based on the quailty of their answers - so over time the system improves.