Robin W

This plugin for bbpress adds fields to the bbp user profile.
The web administrator sets up the field names, and the forum users populate their details.
<ul>
<li>Many sites would like to have the forum user’s location, so city and state, or country can be set up as fields</li>
<li>On a gaming site you could fields like favourite game, platform, level achieved, highest score, favourite character.</li>
<li>On a diet site you could let users have target weight, diet plan, weight lost so far etc.</li>
<li>On a film site you could have favourite film, best actor, film genre.</li>
<li>Or on a golf site you could have handicap.</li>
</ul>
In fact any pieces of information that your forum users might want to display.

bbp profile information

For bbPress - adds fields to the bbp user profile and displays any combination of these under the authors avatar in topics and replies

This Plugin IS NO LONGER MAINTAINED
use https://wordpress.org/plugins/bbp-private-groups/
This plugin displays private forums titles to non logged-in users in main index.
This allows non logged-in users to see that forums exist, but have no acces to these.
If selected by a non logged-in user, the use is sent to a page (determined in settings), allowing the admin to determine what information is given, eg login, registration, text etc.
It also has the options to
display forum content (descriptions) for sub forums
remove the prefix ‘private’ from all private forums
Works with bbpress 2.5.4

Private forums visibility

For bbPress - displays private forums titles and optional descriptions to non-logged in users, and optionally hides the prefix 'private'

bbp profile information vs Private forums visibility