Since 2006, when Facebook became available to the general public, the visual practices of its users, especially the youngest ones, have been described as forms of narcissistic behavior. By analyzing the use of images in dating, this essay reconstructs what users actually do online and reveals a very different picture. From searching for profiles to deciphering their content, the practices observed make utilitarian use of the photographs, which are interpreted as indices and drive a highly pragmatic approach. The multitude of personal sources and the diversity of their content impart a great informational importance to the images, which are nonetheless carefully analyzed, with weight also given to other interactions. This exploration of the sharing and reception of images on networks highlights their transactional value, which encourages behaviors distinguished by reciprocity.