Aid groups in Haiti's shattered capital Port-au-Prince began handing out heavy bags of rice to thousands of post-quake homeless on the first day of a food "surge" designed to feed 1.9 million people for a month. (..) At the site of one distribution point, WFP spokeswoman Silke Buhr told AFP that the "surge" of free food did not threaten efforts to try to re-establish markets selling groceries. "The fact is that a lot of these people who are receiving the food assistance here today would not be able to buy the products in the market at market prices," which have in many cases tripled since the quake, she said.