@PsychzNetworks is spamming me non-stop. Every minute of every day.
I googled them and it seems Psychz Networks are famous for spamming people.
I have removed non-moderated comments (I didn't want to do this and have since added non-moderated comments back) - didn't stop Psychz Networks' spam.
I have added Captcha verification - didn't stop Psychz Networks' spam. (The Drupal Captcha module rocks, btw!)