Herobook

Somewhere between Facebook, Twitter, and Instagram, Herobook is a social media site focused on the superpowered. It offers a secure, encrypted messaging system between verified users - heroes and villains both - as well as serving as a platform for their social media presence. Users can make text, video, audio, or image posts, share and reply to posts made by others, and comment on both posts and profiles.

History
Originally designed only for the use of superheroes, letting them message each other securely and tag trouble areas that needed attention, it later expanded, allowing the public to first follow heroes' posts and tag trouble themselves, then to comment, and eventually to make posts of their own. Hero accounts became verified to distinguish them from the public, and before long some villains began to make accounts as well.

Nowadays, a presence on Herobook is a useful tool for those heroes and villains who intend to manage their public appearance. Even those who don't care tend to have verified accounts - if empty of posts - in order to make use of and be available through the secure messaging system, and to receive notifications of trouble through the app.

Notable Users
The most-followed account on the site is that of Titan. He very rarely posts on his own page - although occasionally he takes (poor-quality) pictures of animals he sees, he's mostly seen through being tagged in selfies with civilians he's saved and other heroes he's worked with, as well as posting happy birthday messages for all of the heroes he follows.

In Starlight City, the most-followed account is the memorialized account of the Starlight Champions. Once managed by Hurricane, it's now filled with profile comments of people saved by or helped by the Champions, sharing their stories.