JSON has an active and vibrant community. Visit the following groups and lists to get involved and learn more:
Douglas Crockford’s JSON site where it all started.
This Yahoo Group is affiliated with the JSON.org site.
This list is for the JSON IETF (Internet Engineering Task Force) Working Group that maintains the JSON IETF specification.
Another great source of JSON tutorials, tools, and articles.
The JSON Schema specification is maintained in this GitHub Repository.
This Google group is associated with the JSON Schema Specification Working Group.
This group focuses on API Design and development.