Fun fact: almost all SSL certs are now provided by the same signing authority, which means any party who gains access to said authority's secret key can pretend to be any website they want to, by simply inserting themselves anywhere in the network between you and that site.

This also means that same party could act as an SSL terminating reverse proxy for any site, including this. If that was happening, neither you, nor the site's owner, would know, but every interaction between us and the site would go directly through this man-in-the-middle.