It’s not that we have sensitive stuff on the blog: quite the contrary. It’s just that we have implemented HTTP Strict Transport Security (HSTS) across the entire kerika.com domain.
HSTS s a security mechanism which helps to protect websites against protocol downgrade attacks and cookie hijacking.
It allows web servers to declare that web browsers should only interact with it using secure HTTPS connections, and never via the insecure HTTP protocol.
Since our blog is on a sub-domain of kerika (blog.kerika.com, to be precise), we needed to implement SSL and HTTPS for the blog as well.