I bet the answer is HTTPS Everywhere. The only bad thing about it is the mixed content blocking, but I still think everyone should use it. There was a link to

I bet the answer is HTTPS Everywhere. The only bad thing about it is the mixed content blocking, but I still think everyone should use it. There was a link to schneier's blog here recently and a few people mentioned that his cert was expired. I am willing to be that everyone who saw the cert warning were httpseverywhere users. https://www.eff.org/https-everywhere https://www.eff.org/https-everywhere