Users have the possibility to enter their SteamID in their profile. Then some details about your Steam profile will be displayed in the forum profile.

The plugin allows you to send automated messages (also known as autoresponders) after you have received a message. The plugin works with the normal private message system and its settings.

Show in post whether a user has birthday.

Allows accepting and declining friend requests directly in the sent private message (PN).

Define how many posts users are allowed to write in groups.

Individual users can be verified via the ACP. This will be displayed in the Postbit-Template afterwards.

Usermap is a plugin which add a map where your user can pin their location on using Google Maps.

Prohibit individual users from sending private messages or using the private messaging system.

Topics can be marked as done by authorized users.

Allow the thread author to choose the best answer!

Hide links in posts from selected user groups and customize the text!

With this small plugin (code snippet) it is possible to allow the registration process only if a checkbox is activated. The plugin also checks if the checkbox is set on the server side.