It's a prototype that I'm still working on with James, to visualize paths through a "funnel". I think Leila's going to try to adapt it for WikiGrok. We're currently just playing with the idea and are open to other requirements / ideas that people are thinking of when they analyze their own funnels.
Dan Andreescu noted a visualization tool during Scrum of Scrums meeting, wondering if people would be interested in it, so I'm passing this along to mobile-l (Dan Andreescu CC'd).