I haven't posted my email address in an effort to reduce spam.
Every comment on this site generates an email to me, by design. I want to be alerted as soon as possible, especially when the spammers are clever and get through my filters—so I can do clean-up as soon as possible. Requiring an email address for comments reduces spam, reduces trolls and gives me another avenue to respond to legitimate commenters.
If you comment on this post, I will get the email and know you want to get in touch with me. I will only reply to this post in email.