I prefer to use speedtest.net , and that site is just using a mini version of it, but with adverts on it. I think i'll stick to speedtest.net, but thanks for the share anyway
Another Speed Test is Adsl Speed Test it also offers you a speed test widget to host your own speed test by using the following 3 ways of hosting: Speed Test as an embed code Speed Test on your website under a new page Speed Test widget using widgetbox.com platform