After seeing possible evidence of Verizon slowing down AWS traffic we have put up a simple page that utilizes our company technology to test the speed to different servers hosted by different cloud technologies. Please test as much as you like. All your speed test results are saved and we will publish the results on the same page after some statistically relevant sample is gathered.
FYI, Linode will throttle your instances to 50Mbps, so if this gets too popular, people may erroneously think that they're being throttled because the server won't send them data as fast as I could.