Index: src/wp-admin/ms-delete-site.php
===================================================================
--- src/wp-admin/ms-delete-site.php	(revision 48047)
+++ src/wp-admin/ms-delete-site.php	(working copy)
@@ -68,7 +68,7 @@
 are gone forever.)
 
 Thanks for using the site,
-Webmaster
+admin of
 ###SITE_NAME###"
 	);
 	/**
Index: src/wp-includes/user.php
===================================================================
--- src/wp-includes/user.php	(revision 48047)
+++ src/wp-includes/user.php	(working copy)
@@ -2574,7 +2574,7 @@
 			'registerfail',
 			sprintf(
 				/* translators: %s: Admin email address. */
-				__( '<strong>Error</strong>: Couldn&#8217;t register you&hellip; please contact the <a href="mailto:%s">webmaster</a> !' ),
+				__( '<strong>Error</strong>: Couldn&#8217;t register you&hellip; please contact the <a href="mailto:%s">site admin</a> !' ),
 				get_option( 'admin_email' )
 			)
 		);