By the end of the month, Reddit will move to an HTTPS-only model for its sites. The move follows similar decisions by Google, Apple, Microsoft, Google and others. The change to secure connections by default gives users a baseline expectation of security and privacy for their interactions with these properties. The company also said it is planning to look into the viability of using certificate pinning to identify certificates that are the only valid ones for a given service, such as Gmail or reddit.com. The White House announced that all federal agencies will be required to move all of their publicly accessible sites and service to HTTPS only by 2016.
Source: https://threatpost.com/reddit-to-move-to-https-only/113383/