I ran across this interesting site that is a partnership between a couple charities in Holland and Palestine. Basically, it seems like you pay 30 Euro and they spray paint your message on 'the Wall'. Then they send you some digital photos of it all. The idea is to bring attention to the wall's existence and it's effects on people but also 'to send you one single, simple message: "we are human beings, just like you, with sense of humour, and lust for life." Check it out for yourself.