This is bad, because even if you are located in the US hulu.com will stop you from using it as they cannot identify you and return a message to you saying "Sorry, currently our video library can only be watched from within the United States".
Add-ons like Location Guard (https://addons.mozilla.org/en-US/firefox/addon/location-guard/) can be used to change your location.
-- http://gnuzilla.gnu.org
