Some of the proxies, do work but most of the time I get sent to the proxies HOME PAGE... NOT the page I wanted to go to. I use FIREFOX 30... and this plugin doesn't seem to work all the time. It may be the proxies, but it feels like a programming bug to me.
I've tried several proxy add-ons and found a couple that have let me view the video I was trying to view. I couldn't find a single proxy on this add-on that would. For every proxy I tried, I also checked with www.stayinvisible.com to see if my actual IP address was being reported and it was being reported in the environment variables. These proxies provided no privacy. Even the screenshots on the webpage don't match the product.