Hmm, here's an idea. Maybe use RouteSentry to split the traffic between... wait for it... my current ISP and my current ISP - then I can probably measure how much flows through each lane? Haven't used RouteSentry before nor have I any idea whether this will work... worth a shot though! Might try it out some time next week and let you all know. In the mean time, any other (preferrably broadband-related ) ideas?