Most people rely on sppedtest.net to see how fast their internet connection is. Apparently, Netflix thinks that the ads and confusing interface make the site unusable and has chosen to launch its own site- fast.com. With fast.com, you see measure your internet connection's download speed. And that's it. You don't get to see how fast your upload speed is or even your ping. Netflix argues that most people don't care about those number and likely don't even know what they mean.