Google PageSpeed 1.2 is now able to send data to a beacon (see bug #58) so I added some minimal support for it into ShowSlow that you can get from the trunk.
Support is minimal and I only display PageSpeed’s overall rank and page load time (which looks like only initial request load) and it seems that there is no way to lunch the test automatically. But it’s a great first step and that I might need to rewrite the whole thing for generic beacon API…