The design and operation of distributed computer systems has traditionally been driven by technical aspects and considerations. However, the usage characteristics of information and communication systems are both implicitly and explicitly determined by social interaction and the social graph of users. This aspect is becoming more and more evident with the increasing popularity of social network applications on the internet. The performance, resilience and reliability of distributed systems can thus be improved by considering social aspects already in and for their design. The aim of this workshop is to elaborate how such socially adaptive networked computing systems can be created. This workshop seeks to shed light on the question how the increasing pervasion of technical infrastructures with social aspects affects the engineering of reliable and scalable networked computing systems. Another interesting question is how suitable mathematical modelling of social phenomena can influence and inspire the design of distributed algorithms, network topologies and communication protocols, resulting in what may be called socio-aware information and communication systems.