What are some alternatives?
Storybird - Visual storytelling community
Commaful - Largest multimedia fiction site in the world. A lot of short stories, poetry, and fanfiction.
Fanfiction.net - The most popular fan fiction website in the world according to Wikipedia
Story Wars - Where writers come together to collaborate and compete in each other's stories.
Storyboard That - Storyboard That is the world's best online storyboard creator.
ForgeFiction - ForgeFiction is a community-driven platform that transfers 🌌 universe creation and 📜 story writing from individuals to communities. Here you can join forces with fiction fans to create books and fictional universes of all kinds, shapes and forms.