1. A system comprising: a plurality of nodes; wherein the plurality of nodes are each configured to participate on a network with others of the plurality of nodes in areas of interest and to exchange codats relevant to the areas of interest with the other nodes, wherein a codat is computer-representable content or data; wherein one of the plurality of nodes is configured to: receive one or more codats relevant to a particular area of interest from one of the other nodes; and determine trust in the other node as a provider of codats relevant to the particular area of interest from the one or more codats received from the other node and relevant to the particular area of interest.