The Ethereum community has accidentally solved a major problem of the Internet: Single Sign-On. "Sign-In w/ Ethereum" is the future of login for *every app on the Internet*, crypto-related or not. Not just an idea, it's already the norm for web3 & will spread. First, what is "Single Sign-On"? The Internet has no personal username/authentication system built-in. While an improvement, Social Sign-On has a few problems: 1)It depends on a few big corps, 2)It's inherently fragmented, 3)Ppl still have weak passwords