The Internet has traditionally been a device-orientedarchitecture where devices with IP addresses are first-classcitizens, able to serve and consume content or services, and theirowners take part in the interaction only through those devices.The Internet of People (IoP) is a recent paradigm where devicesbecome proxies of their users, and can act on their behalf. Torealize IoP, new policies and rules for how devices can take actionsare required. The role of context information grows as devicesact autonomously based on the environment and existing socialrelationships between their owners. In addition, the social profilesof device owners determine e.g. how altruistic or resourceconservingthey are in collaborative computing scenarios. In thispaper we focus on community formation in IoP, a prerequisitefor enabling collaborative scenarios, and discuss main challengesand propose potential solutions.