Expect a mysterious letter sometime soon from Lenka Clayton and Michael Crowe who aim to get neighbours and friends talking by creating curiosity. It’s all part of an art project that started when they sent a handwritten letter to 467 houses in Cushendall, Ireland in April 2009. A few months later, they repeated the exercise by sending 620 letters to people in Polish Hill, Pittsburgh, USA. They intend to send a letter to everyone in the world. They are collecting responses to the letters and discussions that have been initiated by the letters, some of which you can see here.