web3explorer.org is valuable because it directly relates to Web3, a term popular for the next generation of internet services leveraging blockchain technologies, decentralized networks, and cryptocurrency ecosystems. The ".org" suggests a community or organizational focus, enhancing its appeal for non-profits, open-source projects, or educational platforms dedicated to blockchain tech. As interest in decentralized internet structures grows, owning such a domain could position an entity at the forefront of Web3 education or innovation advocacy.