+__ http://scott.yang.id.au/code/trackback-em-all/
+
+
+============
+Dependencies
+============
+- PHP 5.3+
+- PDO
+- `Net_URL2`__
+- `HTTP_Request2`__
+- `PEAR2 Services_Pingback`__
+- `SimplePie`__
+
+__ http://pear.php.net/package/Net_URL2
+__ http://pear.php.net/package/HTTP_Request2
+__ https://github.com/pear2/Services_Pingback
+__ http://simplepie.org/