Decentralized URL based comments and ratings

I was wondering if IPFS can be used to create such a browser plugin.
The plugin would allow users to visit any webpage and post comments, reply and rate the URL they are viewing. The URL, username, date and comment/reply/rating would be saved to IPFS. Anyone with the plugin could see, reply and rate the url.
The reason for such a plugin is free speech. As we have seen social media like youtube remove downvotes and delete comments, this application is vital to preserving free speech and the free flow of ideas and information.

update to add, I did find one on github called Komento but it appears to be abandoned