This post was created by HonoluluExpress and posted at the following page and I have decided to add it to my security thread with his permission. The rest of the post is written in his words.
Over the time I’ve been here I’ve been talking to a lot of people. I have also acquired a lot of gpg/pgp keys and I see that LOT of people use there real email addresses. I would like to remind everyone that when you give someone your pgp/gpg key THEY CAN SEE THE EMAIL ADDRESS THAT YOU ASSOCIATED WITH THAT KEY. You are NOT suppose to use ANY type of clearnet email service such as: gmail, yahoo, hotmail, etc. If you want to use a valid email address then you need to use an email provider that supports Tor and anonymity. For example I use safe-mail. I’m able to access this email service on Tor which allows me to stay anonymous. You may also use an email such as “firstname.lastname@example.org”.
DO NOT UNDER ANY CIRCUMSTANCES ASSOCIATE A CLEAR NET EMAIL ADDRESS WITH YOUR PGP/GPG KEY. THIS WILL COMPROMISE YOUR ANONYMITY.
Definition of DOX: Personal information about people on the Internet, often including real name, known aliases, address, phone number, SSN, credit card number, etc.