Assistant [US Senate] Majority Leader Dick Durbin (D-IL) today urged social-networking company Facebook to take "immediate and tangible steps" to protect the human rights of democracy and human rights activists who use the firm's service. Writing to Facebook CEO Mark Zuckerberg, Durbin said: "...As millions of people around the world use Facebook to exercise their freedom of expression, I am concerned that the company does not have adequate safeguards in place to protect human rights and avoid being exploited by repressive governments."...While Facebook has facilitated efforts by activists to organize demonstrations and publicize human-rights abuses, the Egyptian and Tunisian governments have reportedly used Facebook to monitor activists. Durbin highlighted his concern that Facebook does not allow activists to use pseudonyms. Durbin also again urged Facebook to join the Global Network Initiative... [Also refers to Google, Microsoft, Yahoo!, Twitter. Includes full text of Durbin's letter]