Google 主動啟用了 HTTPS 版本：「Bringing HTTPS to all blogspot domain blogs」，預設會將 HTTPS 開起來：
As part of this launch, we're removing the HTTPS Availability setting. Even if you did not previously turn on this setting, your blogs will have an HTTPS version enabled.
另外提供 HTTPS Redirect 的選項，可以將訪客自動轉到 HTTPS 上：
custom domain 的部份不知道會怎麼提供...