Didn't I hear most of this in the Hackers movie that I seem to rewatch time after time?
Inception (posting to the site)
Green-lit (threshold of submitters required Yes votes)
Lack of Interest (threshold not met)
Released (product launch)
Let's say a project reaches Release (from our above defined lifecycle), all users who voted "Yes, I would use this" for the project might need to verify they've used the app or risk having their weight ratio degraded (thus making future "Yes, I would use this" votes count for less). If the project they 'backed' fails then there is no change to the weight.