It can’t get any easier than this. Go to http://www.internetfrog.com/mypc/speedtest/ and it will give you the speed of your internet connection. You don’t have enter anything in. You don’t even have to click anything. It just does it. It takes about 10 seconds.
It’s fun to see what speed you’re actually getting, especially if you have DSL or cable modem. It is also useful as a troubleshooting tool if your internet connection is acting up.