It was a real-time system, actually. It wasn't a forum: riders would appear and disappear on the fly as they entered routes, and it did overlap calculations. Yo

It was a real-time system, actually. It wasn't a forum: riders would appear and disappear on the fly as they entered routes, and it did overlap calculations. You just put in your start and end points and it'd match people with quite different start and end points if the trip fuzzily matched subsegments.