Re: I don't understand this at all.
I was thinking the same thing.
For confidential email, why would anyone trust their email provider and not use encrypted email?
Of course, it is virtually impossible to hide the source and destination in email, since that's needed for delivery and having a two way conversation, but even that is fixed by encrypted online form - just use it from a web cafe, and provide a unique private ID to have a secure two-way discussion.
Of course she would need to ensure the encrypted data is only opened on her own PC in her own secure environment.
The blog owner can still be subpoenaed for information but that's just normal law exactly as it should be; I'd imagine PJ would be able to handle it, and have lots of support if it happened.