Nice trick. Spoiler:
HTTP/1.1 200 OK
Date: Mon, 19 Mar 2012 08:49:27 GMT
Server: Apache
Link: <_asdf.css>;rel="stylesheet";type="text/css";media="all"
Content-Length: 0
Connection: close
Content-Type: text/html; charset=UTF-8
Re:Try and view the source
by thinkalone on Monday March 19, 2012 @03:19AM
(#3722799)
That one's fun - I thought it was going to be more complicated and never considered the method you used :)
Very cool.
With httpfox I got
html:after { padding-left: 5px; content: 'Can you view my source from Firefox or Opera?'; }
Edit: It's also possible to view the source with Firefox JSview, Web Developer addons and curl.
http://citeomatic.com/_asdf.html
(This one only works in Firefox and Opera, not Chrome, sadly)