> Is it a matter of trust in Mozilla Yes. Mozilla has helped bring a large number of Web-related standards while maintaining consistently high privacy and secu

> Is it a matter of trust in Mozilla Yes. Mozilla has helped bring a large number of Web-related standards while maintaining consistently high privacy and security requirements. Note that Persona isn't a one-central-service system, though. You can have a ton of identity providers, assuming they all follow the same standard. You do need one service to get started, however.