Is this for users accessing sites like LinkedIn without HTTPS, or do you suppose that the NSA is signing trusted certs?
Here's 2 situations: * https://linkedin.com Redirects To www.linkedin.com * https://www.linkedin.com works, but all links go to www.linkedin.com
Not only that, but all the static resources are loaded over HTTP (FF and Chrome both warn about this).
This shouldn't come as a surprise, because the LinkedIn team can't be trusted to lock their fucking car doors, let alone secure a website.
All the other links on that page (about, etc) do go to http://-only pages, but at least the links you provided and their static resources all go over https.