The Diaspora communications policies allow comments to public posts literally from anybody. Allow this policy model by default for commenters from that network. This policy decision can be set or disabled on the addon/features settings page.

mod/settings.php

@@ -114,6 +114,12 @@ function settings_post(&$a) {
 		check_form_security_token_redirectOnErr('/settings/featured', 'settings_featured');
 
 		call_hooks('feature_settings_post', $_POST);
+
+		if($_POST['dspr-submit']) {
+			set_pconfig(local_channel(),'system','diaspora_public_comments',intval($_POST['dspr_pubcomment']));
+			info( t('Diaspora Policy Settings updated.') . EOL);
+		}
+
 		build_sync_packet();
 		return;
 	}
@@ -648,18 +654,31 @@ function settings_content(&$a) {
 	}
 	if((argc() > 1) && (argv(1) === 'featured')) {
 		$settings_addons = "";
+
+		$o = '';
+		$diaspora_enabled = get_config('system','diaspora_enabled');
 		
 		$r = q("SELECT * FROM `hook` WHERE `hook` = 'feature_settings' ");
-		if(! count($r))
+		if((! $r) && (! $diaspora_enabled))
 			$settings_addons = t('No feature settings configured');
 
+		if($diaspora_enabled) {
+			$pubcomments = get_pconfig(local_channel(),'system','diaspora_public_comments');
+			if($pubcomments === false)
+				$pubcomments = 1;
+		}
+
 		call_hooks('feature_settings', $settings_addons);
-		
-		
+				
 		$tpl = get_markup_template("settings_addons.tpl");
 		$o .= replace_macros($tpl, array(
 			'$form_security_token' => get_form_security_token("settings_featured"),
 			'$title'	=> t('Feature Settings'),
+			'$diaspora_enabled' => $diaspora_enabled,
+			'$pubcomments' => $pubcomments,
+			'$dsprtitle' => t('Diaspora Policy Settings'),
+			'$dsprhelp' => t('Allow any Diaspora member to comment on your public posts.'),
+			'$dsprsubmit' => t('Submit Diaspora Policy Settings'),
 			'$settings_addons' => $settings_addons
 		));
 		return $o;