Haiti is often nicknamed the "republic of NGOs." Since the earthquake of 12 January 2010, the number of NGOs – mostly relief and development groups – working in Haiti exploded from 3,000 to an estimated 10,000. Touching down in Port-au-Prince on Friday, it struck me that Haiti, or at least its capital, could also be known as the republic of rebar. Across the cityscape, rebar protrudes from thousands of roofless buildings, attesting to the progress made since the earthquake that virtually flattened the city and killed 223,000, but also the work that remains to be done.