I think there are some areas in here that we might use, contribute to, or implement tools in. The article contents are excellent, but so is the way the article is constructed.
Every paragraph is followed by a small number, which is a link to a commenting mechanism.
The immediate result is a document with a linear discussion thread on every paragraph, all built with freely available tools. The document relies on JavaScript and was clearly marked up by software. I expect that the topics were created automatically. An interesting approach.