diff --git a/includes/functions.php b/includes/functions.php
index d2d0416..8800cec 100644
--- a/includes/functions.php
+++ b/includes/functions.php
@@ -121,7 +121,7 @@ function get_webmention_form_text( $post_id ) {
  * @return string
  */
 function get_default_webmention_form_text() {
-	return __( 'To respond on your own website, enter the URL of your response which should contain a link to this post\'s permalink URL. Your response will then appear (possibly after moderation) on this page. Want to update or remove your response? Update or delete your post and re-enter your post\'s URL again. (<a href="https://indieweb.org/webmention">Learn More</a>)', 'webmention' );
+	return __( 'To respond on your own website, enter the URL of your response which should contain a link to this post\'s permalink URL. Your response will then appear (possibly after moderation) on this page. Want to update or remove your response? Update or delete your post and re-enter your post\'s URL again. (<a href="https://indieweb.org/webmention">Find out more about Webmentions.</a>)', 'webmention' );
 }
 
 /**
diff --git a/templates/webmention-comment-form.php b/templates/webmention-comment-form.php
index 227824c..1b7e5a7 100644
--- a/templates/webmention-comment-form.php
+++ b/templates/webmention-comment-form.php
@@ -5,11 +5,12 @@
 do_action( 'webmention_comment_form_template_before' );
 ?>
 <form id="webmention-form" action="<?php echo get_webmention_endpoint(); ?>" method="post">
-	<p>
-		<label for="webmention-source"><?php echo get_webmention_form_text( get_the_ID() ); ?></label>
+	<p id="webmention-source-description">
+		<?php echo get_webmention_form_text( get_the_ID() ); ?>
 	</p>
 	<p>
-		<input id="webmention-source" type="url" autocomplete="url" required pattern="^https?:\/\/(.*)" name="source" placeholder="<?php esc_attr_e( 'URL/Permalink of your article', 'webmention' ); ?>" />
+		<label for="webmention-source"><?php esc_attr_e( 'URL/Permalink of your article', 'webmention' ); ?></label>
+		<input id="webmention-source" type="url" autocomplete="url" required pattern="^https?:\/\/(.*)" name="source" aria-describedby="webmention-source-description" />
 	</p>
 	<p>
 		<input id="webmention-submit" type="submit" name="submit" value="<?php esc_attr_e( 'Ping me!', 'webmention' ); ?>" />