diff --git src/wp-admin/includes/class-wp-ms-sites-list-table.php src/wp-admin/includes/class-wp-ms-sites-list-table.php
index f9b33e4..9e89207 100644
--- src/wp-admin/includes/class-wp-ms-sites-list-table.php
+++ src/wp-admin/includes/class-wp-ms-sites-list-table.php
@@ -278,7 +278,7 @@ class WP_MS_Sites_List_Table extends WP_List_Table {
 									$actions['spam']	= '<span class="spam"><a href="' . esc_url( wp_nonce_url( network_admin_url( 'sites.php?action=confirm&amp;action2=spamblog&amp;id=' . $blog['blog_id'] . '&amp;msg=' . urlencode( sprintf( __( 'You are about to mark the site %s as spam.' ), $blogname ) ) ), 'confirm') ) . '">' . _x( 'Spam', 'site' ) . '</a></span>';
 
 								if ( current_user_can( 'delete_site', $blog['blog_id'] ) )
-									$actions['delete']	= '<span class="delete"><a href="' . esc_url( wp_nonce_url( network_admin_url( 'sites.php?action=confirm&amp;action2=deleteblog&amp;id=' . $blog['blog_id'] . '&amp;msg=' . urlencode( sprintf( __( 'You are about to delete the site %s.' ), $blogname ) ) ), 'confirm') ) . '">' . __( 'Delete' ) . '</a></span>';
+									$actions['delete']	= '<span class="delete"><a href="' . esc_url( wp_nonce_url( network_admin_url( 'sites.php?action=confirm&amp;action2=deleteblog&amp;id=' . $blog['blog_id'] . '&amp;msg=' . urlencode( sprintf( __( 'You are about to delete the site %s. This is a permanent and irrevocable. All pages, posts, comments, and other data will be deleted forever. There\'s no going back, please make sure this is something you want to do.' ), $blogname ) ) ), 'confirm') ) . '">' . __( 'Delete' ) . '</a></span>';
 							}
 
 							$actions['visit']	= "<span class='view'><a href='" . esc_url( get_home_url( $blog['blog_id'], '/' ) ) . "' rel='permalink'>" . __( 'Visit' ) . '</a></span>';