I think fast.com (Netflix) will be my new go-to for speedtesting. More than almost anyone else, I know they know their stuff when it comes to network speed, and the site is ridiculously fast and simple.
I've also used speedof.me which is a pretty nice HTML5-based speed test. But it's great to have a few options available.
I have been using http://speedof.me/ for quite some time. It works nicely.
It doesn't work here, a lot of web socket connection errors
We had a memory issue since we received an enormous influx of unexpected traffic from reddit. Adding capacity now