I've been using it to host static websites for free personally. You can get free AR to try it yourself, more than enough to last you a very long time. I deploy from localhost and it's on the permaweb almost instantly.

http://tokens.arweave.org/

Arweave is based on a new consensus mechanism called ‘proof of access’ (PoA). Arweave is more suitable for slow write (upload) and fast read (download). Download is more useful for most use cases, like hosting websites, unlike other decentralized storage projects which are more suitable for write (Upload)

Arweave has developed a system for data storage which makes it economically sustainable and feasible to store data for centuries. The system allows you to have highly available low latency data storage while maintaining an incentive model where miners will store user's data forever.

Some apps you can check out built on the permaweb:

https://medium.com/@arweave/the-arweave-open-web-incubator-d...

https://weve.email

https://v2.feedweave.co

https://3255w57x4jrhpmzwesguivvjyqnphc4cej5mea5mdpllp46fnrtq...

https://7usqj2gxzeg2hek6sngrsap3fcizkfklqr2trdkl4tpibc6cgs3q...

https://weibo-uncensored.github.io/

https://permasee.com/