Your design is great and helping people to make their web sites faster is laudable goal. Add more testing locations -- even better, write a probe that you can

Your design is great and helping people to make their web sites faster is laudable goal. Add more testing locations -- even better, write a probe that you can run on various consumer broadband connections that will report results back centrally. Please don't go fire up a bunch of VPSes around the globe for performance monitoring -- that data is largely useless. Build an image, load it onto a bunch of Pogoplugs, send them out to some friends who live in various parts of the world (and various parts of the US with various kinds of broadband!)