Referring to this thread on the Joomla forum: http://forum.joomla.org/viewtopic.php?f=714&t=936283

This was recently brought up by Sucuri after checking an issue I received via Google Webmaster Tools

Your website redirects the visitor using the following method:

-------------------------[begin test snippet]-------------------------
$ curl -sD - -L "http://www.horrortalk.com/component/weblinks/weblink/50-movie-distributors-us/46->uncork-d-entertainment.html?Itemid=101&task=weblink.go" |head -n 3

HTTP/1.1 303 See other
Date: Tue, 04 Oct 2016 22:04:10 GMT
-------------------------[begin test snippet]-------------------------

See the "303 See other"? This is the status code provided by your website. However, Google needs a >301 status code in order to understand that anything after that, is not on your website anymore.

It was suggested by user mbabker to raise it here.