Some time ago by popular request I opened the forum to public browsing. This also means search engines will index all our posts.
Please do not post your personal email address, that of other people on the forum for any reason. This is a surefire way to be harvested by spambots, with bad consequences.
Discourse supports PMs - personal messages. Just click on the user name and you can send a personal message. These are not indexed and are completely private.
User data including your email address is completely private, not indexable, and secure.