Social media platforms like Twitter and Reddit are increasingly infested with bots and fake accounts, leading to significant manipulation of public discourse. These bots don't just annoy users—they skew visibility through vote manipulation. Fake accounts and automated scripts systematically downvote posts opposing certain viewpoints, distorting the content that surfaces and amplifying specific agendas.
Before coming to Lemmy, I was systematically downvoted by bots on Reddit for completely normal comments that were relatively neutral and not controversial at all. Seemed to be no pattern in it... One time I commented that my favorite game was WoW, down voted -15 for no apparent reason.
For example, a bot on Twitter using an API call to GPT-4o ran out of funding and started posting their prompts and system information publicly.
https://www.dailydot.com/debug/chatgpt-bot-x-russian-campaign-meme/
Bots like these are probably in the tens or hundreds of thousands. They did a huge ban wave of bots on Reddit, and some major top level subreddits were quiet for days because of it. Unbelievable...
How do we even fix this issue or prevent it from affecting Lemmy??
Add a requirement that every comment must perform a small CPU-costly proof-of-work. It's a negligible impact for an individual user, but a significant impact for a hosted bot creating a lot of comments.
Even better if you make the PoW performing some bitcoin hashes, because it can then benefit the Lemmy instance owner which can offset server costs.
There was discussion about implementing Hashcash for Lemmy: https://github.com/LemmyNet/lemmy/issues/3204
It seems like a no-brainer for me. Limits bots and provides a small(?) income stream for the server owner.
This was linked on your page, which is quite cool: https://crypto-loot.org/captcha
what happens when the admin gets greedy and increases the amount of work that my shitty android phone is doing
It doesn't seem like a no brainer to me... In order to generate the spam AI comments in the first place, they have to use expensive compute to run the LLM.
most of the time this "expensive" compute is just openAI
Hashcash isn't "cryptocurrency".
Technically not, but spammers can already pay to outsource hashing more easily than desirable users can. So if we're relying on hashes anyways, then we might as well make it easy for desirable users to outsource too.
IMO that's why the inventor of Hashcash just develops Bitcoin today.