Permanent information storage.
The Arweave network is like Bitcoin, but for data: A permanent and decentralized web inside an open ledger.
Permanent storage has many applications: from the preservation of humanity's most important data, to the hosting of truly decentralized and provably neutral web apps.
The Arweave protocol is stable, mature and widely adopted. As such, its ecosystem is fully decentralized. This site is just the tip of the iceberg. It acts as a map that points you to places you can learn about, use and build on Arweave.
Dive in! The rabbit hole is deep, and the possibilities are endless.