Re: Evil will always triumph
Digital signatures won't stop Google reading your email - signing is different to encrypting the email text. Don't know what governments did to stop use of signatures.
We don't have commonly used digital signatures because Microsoft won't support them in an easy to use fashion: the more I saw email coming from Outlook the fewer digital signatures appeared; the more email was sent to Outlook the more the complaints and confusion about "this gibberish" (compounded by top-posting, aargh). Microsoft didn't/couldn't own The Web Of Trust so you don't get to use it.
It has always boggled me that lawyers, in particular, never bothered to learn the basics of what email is and never bothered to demand digital signatures - I guess they just managed to figure out to make more money from the status quo.