What I propose here is not deeply original; most of the ideas presented have existed for a long time as research prototypes. However, these tools have not had very widespread diffusion. That is not strictly accurate: some aspects of my proposal are inspired by tools that have become very popular, like web forums, blogs and wikis.

The aim of this comparison section is to

Some of the difficulties in adoption of the research ideas will turn out to have been technical; those will be seen to be less of an obstacle with modern web technologies. Other difficulties I would call socio-structural; the distributed nature of the web works against any approach that makes content dependent on a centralized server, for example. (Though such services can certainly enhance content.) Other difficulties are political and cultural: content ownership issues, for example.