Web3fi.net is valuable because it combines "Web3," a term often associated with the next generation of the internet focusing on decentralized networks, blockchain technologies, and cryptocurrency solutions, with "fi," which could stand for finance, indicating financial applications. Together, they suggest a domain aimed at financial services within the Web3 tech space, making it significant for businesses or startups in blockchain, fintech, or decentralized finance (DeFi). The .net TLD adds a tech-oriented, network-implied credibility.