Unless you make a p2p system and search comments by page hash in some way (maybe just over I2P?) making it hard for other nodes to understand from which node it comes and which node downloads those comments.
OK, I agree. Not very good. But in theory it can be better.
Not necessarily and only those you comment.
That’s the point, to comment any webpage. It’s clear you visited it if you comment it.
Presumably it loads comments when you visit a page. That would send a request with the URL to whatever service they’re running.
Unless you make a p2p system and search comments by page hash in some way (maybe just over I2P?) making it hard for other nodes to understand from which node it comes and which node downloads those comments.
OK, I agree. Not very good. But in theory it can be better.