I wrote a short piece for Elephant in the Lab on the virtues of PubPub:

In its early days, PubPub was proudly sui generis. The team ignored most scholarly publishing conventions by design. Among many other things, there was no real support for submission or review. The ambitious point was to rethink what scholarly communication might look like—built around the atomic Pub unit, HTML-first, and unburdened by the dead weight of tradition. That blank-slate radicalism, admirable as it was, made it hard to implement even defensible conventions, like citation formatting. What has happened, over the last few years, is that the team has made thoughtful concessions to the inherited reality: support for formatted PDFs, for example, or more book-specific metadata fields. PubPub may have razed the house of scholarly publishing, but its tacit goal since has been to build back the rooms worth having.