Online social networks are one of the technological tools most used by university students at present. Likewise, some enterprises are beginning to use them to support their business process. However, one part of the society has the impression that these are just a waste of time. Despite this, studies have shown that, properly used, social networks can have great benefits, such as the development of information literacy, access to information repositories and the development of social capital. Being a digital native does not guarantee that university students will be able to obtain these benefits. Teachers and universities in general, rather than block student access to these networks, must concern themselves with developing the necessary information literacy to produce healthy informivores.