I got the head's up from some folks concerning Traceloop.com. It's an interesting idea - you can see what route your traffic takes on the /return/ path. By utilizing a large group of distributed test points anyone registered with the service can run traceroutes in both directions provided there is a client near the destination ISP. So, they are looking for more people to sign up for the network - but also to have people use it. I'd like to see this used vis a vis DoS attacks and such - but this approach is a whole new way of doing this.