I'm sure Google already has an encrypted version of their Gmail service, but why would they shoot themselves in the foot and loose all that Ad revenue? You cou

I'm sure Google already has an encrypted version of their Gmail service, but why would they shoot themselves in the foot and loose all that Ad revenue? You could put that intelligence in the client, but there is only so much analysis you do do using JavaScript, I'm sure the computing power they have available on their servers is phenomenal, and add to that a huge databank of information they have available to be able to better match those ads to you. And you've already mentioned the privacy issue...