There is a software called bitmessage which is kind of interesting technology. It is fully decentralized version of e-mail. The way it works is you download the client and then you send an e-mail to a certain bitmessage e-mail address. That message is then encrypted and uploaded to the public blockchain. When you first use the software you download the full blockchain up to a certain date.

A fully decentralized version of an "upvote/downvote" system could be done in the same way.

First - build the software so it allows people to submit top posts. This one would be one blockchain. Then have a second blockchain for comments. Then have a third blockchain for content moderation. Also another for upvotes/downvotes. When you download all the blockchains, it would simply rebuild the website in the software so you could use it. We would also need to strip out images, videos and anything large since this would simply take up too much space. Videos/images could be hosted somewhere else. We would also need to force everything to go through TOR so user IP addresses are not leaked.

A system like this would be impossible to control or shutdown. You would effectively need to break TOR or shut down the internet to do it.

Controlling spam would likely be the biggest issue.

There is a software called bitmessage which is kind of interesting technology. It is fully decentralized version of e-mail. The way it works is you download the client and then you send an e-mail to a certain bitmessage e-mail address. That message is then encrypted and uploaded to the public blockchain. When you first use the software you download the full blockchain up to a certain date.

A fully decentralized version of an "upvote/downvote" system could be done in the same way.

First - build the software so it allows people to submit top posts. This one would be one blockchain. Then have a second blockchain for comments. Then have a third blockchain for content moderation. Also another for upvotes/downvotes. When you download all the blockchains, it would simply rebuild the website in the software so you could use it. We would also need to strip out images, videos and anything large since this would simply take up too much space. Videos/images could be hosted somewhere else. We would also need to force everything to go through TOR so user IP addresses are not leaked.

A system like this would be impossible to control or shutdown. You would effectively need to break TOR or shut down the internet to do it.