4. What is PREreview? PREreview is a free online platform for collaborative writing of preprint reviews after discussions at scientific journal clubs. The website is supported by Authorea’s infrastructure, allowing reviewers to write and publish (with a free DOI, digital object identifier) their feedback directly on the PREreview website. The goal is to create a collaborative space for a community of preprint reviewers to grow and flourish in a supportive environment, perhaps lifting some from the pressures that might arise from posting feedback directly onto a preprint server. In addition, the platform hosts easy-to-use resources that will guide scientists in writing peer reviews, as well as ways to lead preprint journal clubs at their home institutions. To learn more about this initiative, visit PREreview.org and read a recent post on eLIFE Labs and the related ASAPbio Peer Review Commentary.