There are two parts to your question.<p>1) What technology is appropriate for a decentralized reddit, and
2) What technology is best for a decentralized cryptocurrency.<p>Regarding (1), a small proof of stake stamp for upvote is fine. So, someone can upvote a Lock Ness monster comment to astronomical level for a while by buying computing power? Big deal. Or you can build a social network and rely on something like Sybil Guard. You don&#x27;t strictly need a consensus here... you can decide to only view the upvotes associated with people in your extended network.<p>The reason they are using a blockchain is because it is sexy, and it is easier than thinking seriously about the problem.<p>Regarding (2), proof of stake with safety bonds and yearly checkpointing is probably the sweetspot.