I suggest you encrypt emails you send me, and if I know your public OpenPGP key, I will encrypt emails I send to you. My keys are 0x8075AEEB (for firstname.lastname@example.org) and 0xAFB5DDA0 (for email@example.com); they can be found at pool.sks-keyservers.net.
I have XMPP accounts on a few servers. My XMPP accounts are firstname.lastname@example.org, email@example.com, and firstname.lastname@example.org.
Some people have requested for me to add them as a contact without sending an email or some other form of communication telling me why they did this. Please understand that if you do this, and I don't recognize your username, I will decline the request.