It should be possible to share the Keypoints graph visualisation with others.
Keypoints currently uses Graphviz to generate the graph. The graph could be exported as a PDF. On export, the actual notes could also be embedded as PDF annotations on top of their corresponding graph nodes. Alternatively, we could export the graph as an interactive image map and add URLs to nodes & link labels. This map could then be part of notes shared via a static site generator.
See also related request in the DEVONthink forums.