Apart from encrypting the comments so the server wouldn't be able to read them, I've been thinking that it's actually possible to leave private messages: it wou

Apart from encrypting the comments so the server wouldn't be able to read them, I've been thinking that it's actually possible to leave private messages: it would be a comment on SHA1(user.publicKey), and the message would be encrypted with that public key. The extension uses the ed25519 crypto system (WebCrypto notoriously avoids implementing it, so I had to use a WASM module). That seems like a very cool idea, albeit it's attracting exactly 0 attention from the public so far :)