I have just experienced something by accident. I was looking for some information and came up with an e-mail from one individual to another on google. Clicked on it and it would not let me in, so I used the cached option and noticed it was e-mail. It had the header, to and from, the e-mail, and signature. So, I tried something else. I went back to google and typed groups.yahoo.com/group/USERNAME/ and was able to cache more e-mails from this user. Do you believe maybe this is just a glitch or is this a privacy volunerability?