diff --git delicious.inc delicious.inc
index a061b78..f99d4a8 100644
--- delicious.inc
+++ delicious.inc
@@ -214,10 +214,25 @@ function _delicious_term_link(&$node) {
 // smart-tagging support
 //
 function _delicious_tag_string($text, $tags, $username) {
-
   if (!$tags) {
     return $text;
   }
+
+  // Match absolute URLs.
+  $url_regex = '((http://|https://|ftp://|mailto:|smb://|afp://|file://|gopher://|news://|ssl://|sslv2://|sslv3://|tls://|tcp://|udp://)([a-zA-Z0-9@:%_+*~#?&=.,/;-]*[a-zA-Z0-9@:%_+*~#&=/;-]))';
+  // Match e-mail addresses.
+  $mail_regex = '([A-Za-z0-9._-]+@[A-Za-z0-9._+-]+\.[A-Za-z]{2,4})';
+  // Match www domains/addresses.
+  $www_regex = '(www\.[a-zA-Z0-9@:%_+*~#?&=.,/;-]*[a-zA-Z0-9@:%_+~#\&=/;-])';
+
+  // Replace all URLs, Domains, and e-mail address with tokens.
+  $i = 1;
+  $replacements = array();
+  while (preg_match("`($url_regex|$mail_regex|$www_regex)`i", $text, $matches)) {
+    $token = '__delicious_processing_replacement_'. $i++;
+    $replacements[$token] = $matches[1];
+    $text = str_replace($matches[1], $token, $text);
+  }
  
   // error, it must start with a tag... :-(
   foreach ($tags as $tag) { 
@@ -236,6 +251,11 @@ function _delicious_tag_string($text, $tags, $username) {
     }
   }
 
+  // Restore all URLs, Domains, and e-mail addresses.
+  foreach ($replacements as $token => $match) {
+    $text = str_replace($token, $match, $text);
+  }
+
   return $text;
 }