== Can I use Firefox Accounts to store user data for my application or service? ==
Firefox Accounts only stores information that will deliver significant user value across applications or is tightly related to the user's identity. It will not store user data for relying services. Relying Mozilla services can use Firefox Accounts for authentication, but application data storage is the responsibility of the individual applications.
==What's the difference between Persona and Firefox Accounts?==
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=== Deployments ===
https://developer.mozilla.org/en-US/Firefox_Accounts#Firefox_Accounts_deployments