Scientists have generally found on social media a valid platform to support their efforts to increase visibility of their scientific work between their peers. Pediatricians, in particular, can use social media with different objectives, depending on the social media or social network, in which they participate. Reasons why the pediatrician should participate in social media are studied, the differences between both types of social networks (vertical or scientific versus generalists) and how to estimate the likely audience in order to optimize the visibility efforts of pediatric professionals in both types, when networking. Some best practices in both categories are outlined as well.