Rocco Palmo over at Vatican gossip site (seriously), Whispers in the Loggia, has all the details on what is the first-ever tweet by a leader of the 2,000-year-old Catholic Church.
Here it is in its entirety, sent around 1 p.m. New York time:
Dear Friends, I just launched News.va Praised be Our Lord Jesus Christ! With my prayers and blessings, Benedictus XVI
Extra blessings for saving characters by eliminating some punctuation.