Human readable accounts so you can send to Jonathan#100 instead of having to memorize bitcoincash:qp3wjpa3tjlj042z2wv7hahsldgwhwy0rq9sywjpyy
Registrations and lookups are public on the Bitcoin Cash blockchain. There is no risk of a central server being hacked and replacing everyones alias with the attacker's address.
Expandable format includes support for popular implementations like Simple Ledger Protocol tokens. For example: tokenAware#15874.
Lookups can be done with a simple endpoint such as /account/100/jonathan. If you're a developer, Learn More Here.
For more information visit https://www.cashaccount.info. For Developers, looking to integrate cash accounts, check out the Javascript library.