"You will not use Facebook if you are located in a country embargoed by the U.S., or are on the U.S. Treasury Department's list of Specially Designated Nationals."

Given Facebook's " -- "The Facebook service should transcend geographic and national boundaries and be available to everyone in the world" -- McCarthy was moved to take action. With so many users in nations such as Cuba, Sudan, and Iran relying on Facebook for communication, she saw the need to stand up and address what seemed to be a dangerous disconnect.

"Internet global networking allows for the possibility of reaching past the agendas of our various home states to connect with each other. It provides a picture of Iranians within Iran other than Ahmadinejad," she says.

"Facebook must remain a networking tool allowing for the free exchange of ideas across national boundaries without linkage to a particular government or cause."