WordPress.org

The configuration page;

The modified post management page;

The templates in practice: I added the code Subscribe to the Jabber feeds: <?php jabber_feed_display ('posts', 'a', "entries (jabber)"); ?> and <?php jabber_feed_display ('comments', 'a'); ?> to the footer.php of the theme (here default).

The templates in practice again: I added <?php jabber_feed_display ('current', 'a', 'Jabber') ?> in the single.php file of the theme (between the p tag of class 'postmetadata alt' in the default theme).