Peer-to-peer ride-sharing is one of the most complex archetypes of the sharing economy. As a result, dedicated digital platforms, designed specifically to handle this complexity, have emerged. However, there are practices where Facebook is used to organise the ride-sharing, although it lacks features that can handle the complexity of ride-sharing. In this research-in-progress paper we demonstrate the importance for researching these practices. We justify the appropriateness for using the Affordance - actualisation lens for analysing the practices. We present the preliminary results from the first case study research.