This isn't truly no signup right? I only saw the handshake now, but isn't my handshakeName+signature my new username and password for posting? Instead of having

This isn't truly no signup right? I only saw the handshake now, but isn't my handshakeName+signature my new username and password for posting? Instead of having a centralized auth provider, the blockchain is used to authenticate the signature? Just looking at Handshake - if I buy HNS and purchase a domain, sure I can use the handshakeName and signature to authenticate to supported websites. But if I want to host a website with the domain, the possible options are using hns.to domain or have my DNS point to a different DNS server. Both are not viable options for my end users to reach my website. Is the expectation that overtime Handshake gains popularity and all existing services would have a mechanism to integrate into this?