Index: application/helpers/textile.php
===================================================================
--- application/helpers/textile.php	(revision 177)
+++ application/helpers/textile.php	(working copy)
@@ -9,7 +9,20 @@
   function do_textile($text) {
     Env::useLibrary('textile');
     $textile = new Textile();
-    return $textile->TextileRestricted($text, false, false);
+    $text = $textile->TextileRestricted($text, false, false); 
+    
+    // The following searches for strings that look like links and auto-links them
+    $search = array(
+        '/(?<!")(http:\/\/[^\s\"<]*)/',
+        '/[^\/](www\.[^\s<]*)/'
+        );
+    $replace = array(
+        "<a href=\"$1\" rel=\"nofollow\">$1</a>",
+        " <a href=\"http://$1\" rel=\"nofollow\">$1</a>"
+        );
+    $text = preg_replace($search,$replace,$text);
+
+    return $text;
   } // do_textile
 
 ?>