Mac OS 10.7.5
Chrome says:
This site can’t be reached
The webpage at https://mc4wp.com/ might be temporarily down or it may have moved permanently to a new web address.
ERR_SPDY_INADEQUATE_TRANSPORT_SECURITY
Firefox says
Your connection is not secure
The website tried to negotiate an inadequate level of security.
mc4wp.com uses security technology that is outdated and vulnerable to attack. An attacker could easily reveal information which you thought to be safe. The website administrator will need to fix the server first before you can visit the site.
Error code: NS_ERROR_NET_INADEQUATE_SECURITY
but, it looks like it works is Safari, so I guess I’m all set!
-Matt