Several guests have posted images online showing old photos of themselves in Airbnb properties. The pictures were taken long prior to their stays. In a European capital, officials checked listings in buildings flagged for earthquake risks. Some belonged to Airbnb and Booking.com. One woman from a UK city plummeted from a balcony while sleepwalking. Cops now investigate the case after video appeared online. Another incident involves a poker player attacked at an Airbnb site. Police analyze footage from the attack.