Decentralized domain name systems like Sui Name Service (SNS) - sns.domains - can be useful for improving the usability of blockchain platforms and decentralized applications (DApps). By allowing users to register and manage human-readable names for their blockchain addresses, SNS and similar systems can make it easier for people to send and receive transactions on the Sui blockchain, and interact with DApps built on the platform. This can help increase the adoption and use of blockchain technology, making it more accessible to a broader audience.