Here’s a snapshot of the trust.txt ecosystem. This is based on information gathered from a robot that crawls the web looking for trust.txt files, and the connections in those files.
The above image has one dot for each member of an organization, and a different dot for the organizations. More lines indicates more connections.
For example, if a publisher belongs to the Texas Press Association and also to the Association of Alternative Newsweeklies, it will be connected to both of those groups.
In short, this is a visual image of how a web crawler looks at the world.