That's a really nice test! I really like that one, much better than Speedtest.net. My only complaint is they don't have a nice simple image to share, best you get is this:
http://www.dslreports.com/speedtest/234317
Edit: Just to put this out there, testmy.net is decent as well, though it never ever shows me hitting my top speeds so I'm not sure if it's less reliable or just harsher about real world speeds:
