This article explores the concept of sharing in three distinct spheres: Web 2.0, whose constitutive activity is sharing (links, photos, status updates, and so on); “sharing economies” of production and consumption; and intimate interpersonal relationships, in which the therapeutic ethos includes a cultural requirement that we share our emotions. It is argued that a range of distributive and communicative practices—not all of which are entirely new—are converging under the metaphor of sharing. Thus, practices in one sphere are conceptualized in terms of practices from other spheres. What all three spheres of sharing have in common are values such as equality, mutuality, honesty, openness, empathy, and an ethic of care. Moreover, they all challenge prevalent perceptions of the proper boundary between the public and the private.