Index: wp-admin/includes/schema.php
===================================================================
--- wp-admin/includes/schema.php	(revision 19842)
+++ wp-admin/includes/schema.php	(working copy)
@@ -362,6 +362,12 @@
 	elseif ( $offset_or_tz && in_array( $offset_or_tz, timezone_identifiers_list() ) )
 			$timezone_string = $offset_or_tz;
 
+	/* translators: other default ping sites. In most cases you will probably want to leave this blank,
+	   but if there is a service particular to your language or country, you can add it here.
+	   One per line. The default ping site, http://rpc.pingomatic.com/, is automatically included.
+	*/
+	$ping_sites = trim( 'http://rpc.pingomatic.com/' . "\n" . _x( '', 'default ping sites' ) );
+
 	$options = array(
 	'siteurl' => $guessurl,
 	'blogname' => __('My Site'),
@@ -406,7 +412,7 @@
 	'active_plugins' => array(),
 	'home' => $guessurl,
 	'category_base' => '',
-	'ping_sites' => 'http://rpc.pingomatic.com/',
+	'ping_sites' => $ping_sites,
 	'advanced_edit' => 0,
 	'comment_max_links' => 2,
 	'gmt_offset' => $gmt_offset,