Do you want to add some additional text, e.g. a footer in RSS feeds of Drupal 7?
You could provide some hints or related news.
I've found a simple solution to do this. There are certainly other solutions or places in Drupal to do this.
<?php/** * Adds some additional text for rss view_mode. * Implements hook_node_view(). */function YOUR_MODULE_node_view($node, $view_mode) { if (($node->type == 'article') && ($view_mode == 'rss' /*| $view_mode == 'full'*/)) { $markup = '<hr><div class="rss-footer">' . t('Has the article been interesting? Would you like to share it?') .'</div><hr>'; $node->content['rss-footer'] = array( //'#type' => 'markup', // The default value. '#markup' => $markup, '#weight' => 500, ); }}?>
