Most likely somebody just forwarded it to their favorite blog, especially if they didn't think the email was confidential. Pretty easy to track outgoing email.
With "CONFIDENTIAL: INTERNAL ONLY GOOGLERS ONLY (FULL TIME AND PART TIME EMPLOYEES)" at the top it's hard to believe they might have thought it wasn't confidential.
Comments
Most likely somebody just forwarded it to their favorite blog, especially if they didn't think the email was confidential. Pretty easy to track outgoing email.
With "CONFIDENTIAL: INTERNAL ONLY GOOGLERS ONLY (FULL TIME AND PART TIME EMPLOYEES)" at the top it's hard to believe they might have thought it wasn't confidential.