From the article: “One group of plaintiffs in a recent class-action lawsuit were non-Gmail users who sent messages to Gmail accounts. Google responded that non-Gmail customers had no expectations of privacy when sending e-mails to people who did use the service.”
Which means Google believes it’s ok to profile people who have not agreed to the terms and conditions, simply because they send mail to those who have. Sending email to a Gmail account is allowing Google to violate your privacy, which it maintains you don’t have in the first place. Yipe.