We launched the social experiment that fights loneliness among old people by putting Facebook in the hands of two grannies. They used it to invite students who miss home cooked meals to their Sunday lunch. They just posted the menu and students booked a chair. We made a documentary showing how their lives started to change and we put it on TV. Soon their lonely apartment became the hottest lunch place in town. Even celebrities like no.3 WTA tennis player Simona Halep or a MasterChef judge booked a seat. Grannies recipes became so famous they got their own cooking show and had their sweets make it to the stores. Having hundreds of messages congratulating the initiative, we launched a Facebook app where any granny can organize her own pop-up lunch. Grannies across the country joined in and their lonely homes became joyful again.