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Stories related to "An Introduction to Mozilla Persona" across the full archive.
The [Persona After-Action Report](https://wiki.mozilla.org/Identity/Persona_AAR) is also interesting.
Also, a slightly earlier take, briefly referenced within the above:
[Opportunistic Encryption for HTTP URIs](http://tools.ietf.org/html/draft-nottingham-http2-encryption-03)
New project to create a W or X JIT engine for browsers.