agree with twodawgs
there is a ping command which tells you if you can access a computer on a network. try this... go to start>run and paste the following and hit enter.
you will see a black window open and 3 lines showing that you can connect to hubpages.
now because it's only 1 line per second nothing will happen to the hubpage website but if billions of pings are sent at the same time the hubpage users will not be able to view the website because hubpages is already processing so many requests.
in simple terms - overload the webserver with unlimited requests, bring the site down.