Hi Eric,
I am sorry to read that you are unhappy about your posts being publicly visible. While only BAA members can post to the forum, in common with most internet fora and other astronomy fora the posts are visible to all, e.g. SPA, AAVSO, cloudy nights, stargazers lounge, astrobin, etc. This means internet search engines like Google have access to the content, and this can be helpful when searching on a particular topic.
I would draw your attention to the BAA forum terms of use, in particular:
“We strongly advise that you do not disclose personal information to others. Do remember that the Forum and Member Pages are visible not just to BAA members, but to the whole world. If you wish to exchange contact details with other members, the Forum and Member Pages are not an appropriate place to do it.”
https://britastro.org/forum-terms
Kind regards,
Andy Wilson
BAA Systems Administrator & Web Content Editor