Living letters goes to Germany and blogs on overcoming violence

The biblical inspiration behind the living letters visits of the WCC's Decade to Overcome Violence is clearly "and you show that you are a letter of Christ, prepared by us, written not with ink but with the Spirit of the living God, not on tablets of stone but on tablets of human hearts." (2 Cor. 3.3 NRSV)
There's a link here to a blog written by two members of the Living Letters team currently visiting Germany.
The idea of a letter as an image of the church is one I like - perhaps this would need to be translated for today as an email, blogpost, facebook or twitter update ... now I wonder what the Greek for facebook might be?