Security researcher Sony, has submitted on 24/11/2011 a cross-site-scripting (XSS) vulnerability affecting blekko.com, which at the time of submission ranked 4425 on the web according to Alexa.
We manually validated and published a mirror of this vulnerability on 13/01/2012. It is currently unfixed.
If you believe that this security issue has been corrected, please send us an e-mail.