diff -Naur flattr/flattr.php flattr-customurl/flattr.php
--- flattr/flattr.php	2012-02-16 08:51:23.000000000 +0100
+++ flattr-customurl/flattr.php	2012-02-18 16:15:41.282770252 +0100
@@ -454,11 +454,14 @@
         if ($hidden == '') {
                 $hidden = get_option('flattr_hide', false);
         }
+ 
+		$custom = get_post_meta($post->ID, '_flattr_post_customurl', true);
+		$buttonUrl = (empty($custom) ? get_permalink() : $custom);
 
         $buttonData = array(
 
                 'user_id'	=> $flattr_uid,
-                'url'		=> get_permalink(),
+                'url'		=> $buttonUrl,
                 'compact'	=> (get_option('flattr_compact', false) ? true : false ),
                 'hidden'	=> $hidden,
                 'language'	=> $selectedLanguage,
diff -Naur flattr/postmeta.php flattr-customurl/postmeta.php
--- flattr/postmeta.php	2012-02-16 08:51:23.000000000 +0100
+++ flattr-customurl/postmeta.php	2012-02-18 16:17:41.390775232 +0100
@@ -32,6 +32,9 @@
 		if ( isset($_POST['flattr_btn_disabled']) ) {
 			add_post_meta($id, '_flattr_btn_disabled',  $_POST['flattr_btn_disabled'],  true) or update_post_meta($id, '_flattr_btn_disabled',  $_POST['flattr_btn_disabled']);
 		}
+		if ( isset($_POST['flattr_post_customurl']) ) {
+			add_post_meta($id, '_flattr_post_customurl',  $_POST['flattr_post_customurl'],  true) or update_post_meta($id, '_flattr_post_customurl',  $_POST['flattr_post_customurl']);
+		}
 		
 		return true;
 	}
@@ -93,6 +96,8 @@
 		{
 			$btnDisabled = get_option('flattr_disable', 0);
 		}
+
+		$customUrl = get_post_meta($post->ID, '_flattr_post_customurl', true);
 		
 		include('postmeta-template.php');
 	}
diff -Naur flattr/postmeta-template.php flattr-customurl/postmeta-template.php
--- flattr/postmeta-template.php	2012-02-16 08:51:23.000000000 +0100
+++ flattr-customurl/postmeta-template.php	2012-02-18 16:19:25.842779561 +0100
@@ -1,5 +1,5 @@
-	<input type="checkbox" value="1" name="flattr_btn_disabled" <?php if ((bool)$btnDisabled) { echo 'checked="checked"'; } ?>/>
-	Disable the Flattr button on this post?
+	<input type="checkbox" value="1" name="flattr_btn_disabled" id="flattr_btn_disabled" <?php if ((bool)$btnDisabled) { echo 'checked="checked"'; } ?>/>
+	<label for="flattr_btn_disabled">Disable the Flattr button on this post?</label>
 	<br />
 
 	<label for="flattr_post_language"><?php echo __('Language:') ?></label>
@@ -35,7 +35,9 @@
 	<br />
 	
 	<input type="hidden" value="0" name="flattr_post_hidden" />
-	<input type="checkbox" value="1" name="flattr_post_hidden" <?php if ((bool)$hidden) { echo 'checked="checked"'; } ?>/>
-	Hide post from listings on flattr.com
-	
+	<input type="checkbox" value="1" name="flattr_post_hidden" id="flattr_post_hidden" <?php if ((bool)$hidden) { echo 'checked="checked"'; } ?>/>
+	<label for="flattr_post_hidden">Hide post from listings on flattr.com</label>
 	<br />
+
+	<label for="flattr_post_customurl">Custom URL</label>
+	<input type="text" name="flattr_post_customurl" id="flattr_post_customurl" value="<?php echo $customUrl; ?>" />