Google Patents "Scroogling"
theodp writes "In Microsoft's eyes, the idea of scanning Gmail so advertisers can bid on access to those suffering from breast cancer, bi-polar disorder, depression, and panic anxiety, deserves no kudos. The USPTO, on the other hand, feels it deserves a patent. GeekWire reports that Google has been awarded a patent on "Scroogling", aka its system and method for targeting information based on message content in a reply. Google takes some jabs at Microsoft in the diagrams accompanying the patent, including one implying that MS-Access and Excel files pose security risks, and another that suggests alternatives to Access."
Technically, email is like sending postcards - it's complete;y open for anyone to read. (Although few do because who has the time to really read every single postcard sent through the mail? The NSA, perhaps).
Email has no technical privacy - it never has. Even in the beginning it was typically available to anyone who had access to the system it's on (back when people logged onto a shell account to retrieve their mail, sysadmins would have free reign over the entire firesystem).
If you wanted privacy, use encryption - it's one of the initial uses of PGP - for encrypting email!
And you're technically correct - in fact there's a class action over this by non-Google users finding that they're being profiled and tracked because they interact with GMail users and even worse, they aren't covered by any of Google's privacy policies because they never agreed to them.