The document discusses the Public Library of Science (PLoS) and why it is a model for open access scientific publishing. PLoS was founded to make scientific literature openly accessible. It publishes several open access journals, including PLoS Biology, PLoS Medicine, and PLoS ONE, a "mega journal" that publishes scientifically sound research from any field. PLoS aims to drive change in publishing towards open access models and make science more comprehensible. It uses many web tools and operates using a liberal open license to encourage sharing of research.