It's funny that the few entities we'd be more inclined to trust are the ones that go out of their way to make sure we don't have to trust them: Firefox Sync does client-side encryption so you don't have to trust the server, Persona does authentication via an identity provider so you don't have to trust persona.org...
I didn't mean persona when I said trusting with my data. I am just saying if ever I could trust a company with my data, it would be Mozilla (shows how much I trust them).
