Co-authoring of a digital content file using content contributed by peer devices in a peer-to-peer communications network is described. A local copy of the digital content file is stored in each of plural peer communications devices disposed in a multi-node communications network. The contents of the local copies of the digital content file stored in at least two peer communications devices are compared and in an event the local copies of the digital content file stored in a peer communications device is missing content that is contained in the other compared peer communications devices, the missing content is merged into the local copy of the digital content file stored in the peer communications device.