well first you have added the link to a subdomain and then inside a another location a double no no for most lists awesomesauce.homelinux.net/Workforce
Then lameprox.co.cc is just a domain getting its content from another site so of course it wont work for that one since the link isnt on that site.
Would rethink how you trying to do this since all your sites would be pointless to a end user if the site serving the iframe info is blocked.
Set the script up on the top level domain and run the proxy right.
Or add a separate footer to the proxy that has the link in it and iframe the other content on the site. Cheap way to do it but suppose it works for you.