Can Facebook and Twitter change the world? Can all the nifty new social-networking sites promote democracy and a better understanding of American values around the world? The potential is certainly there as was seen in the invaluable Twitter updates during the post-election protests in Iran. The U.S. government is embracing Web 2.0 for an ambitious strategy of reaching previously untapped populations around the world call it Public Diplomacy 2.0. While the potential progress is undeniable, so is the potential danger.