Infrastructure in our cities – let’s call it the hardware – remains much the same as ever, but the software – the way we use it – is transforming rapidly. One piece of that software, Airbnb, is dramatically reshaping the world’s cities. The digital platform allows citizens to find and rent short-term accommodation from other citizens. Airbnb has the potential to rupture the traditional spatial relationship between tourist and local, making our cities more vibrant and diverse places to live in and to visit. The question is: what opportunities and dangers does the platform present? What are the implications of repurposing existing residential infrastructure for short-term accommodation? What happens when the global “sharing economy” meets a city’s suburbs?