BROOKLYN - A Williamsburg restaurant has launched a program today allowing diners to pay what they want for a meal.Paula Douralas, the owner of Santorini Grill, says she's trying to give a little back to the community that has given her so much, especially amid struggling economy. Douralas says her customers would be able to name their price for Greek delicacies at the restaurant for the next month. She plans to continue the program as long as she can pay the bills.