Kris Zyp is a research and development associate with SitePen, a forward-thinking company that is committed to building and enhancing the open web. He represents the Dojo foundation on the EcmaScript 4 committee. Kris is the lead developer of the Persevere project and the JSON Schema format. He is actively researching and developing technologies in Ajax REST client/server architecture, JSON-RPC, JSONPath, JSON Referencing, and JavaScript persistence. He is also a contributor to Comet Daily and is working on RESTful HTTP Comet approaches.