Users running a non-download version of Vanilla (pulled from github), on branch release/2019.016 or master from the last 2 weeks should upgrade to release/2019.017 or latest master for security reasons. Downloaded official open sources releases are not affected.

PostAnonymously 1.0.1

Allows users that are already logged in to post anonymously by checking a box on the discussion/comment posting form.

Before installing
Make sure you create your anonymous user in your Vanilla installation. This user can have any username you want, but the default is "Anonymous". If you would like to user something else, make sure you change line 15 of default.php.