Unfixed XSS vulnerability at www.rankquest.com

Security researcher MrDoug, has submitted on 09/07/2009 a cross-site-scripting (XSS) vulnerability affecting www.rankquest.com, which at the time of submission ranked 426409 on the web according to Alexa.
We manually validated and published a mirror of this vulnerability on 18/12/2011. It is currently unfixed.
If you believe that this security issue has been corrected, please send us an e-mail.

Vulnerable URL: http://www.rankquest.com/tools/Link-Popularity.php?url=</textarea><script>alert("XSS by MrDoug")</script>