Hmm, can't there be a crypto currency deposit for each message that will then be returned after 24h? That or something similar. Then the average user would only need very minimal amount of currency but you can only spam if you have considerable capital.
Maybe the deposit could also suffer a bit of value loss. Just enough to make spamming not worth it. I wonder what would be just enough here. It ought to be less than what would make it undesirable for almost all users?
Edit: I feel like the main problem with social media innovation is that there's very little possibilities to experiment. You need a good amount of users to test something out and users will only go to established services.
Maybe the deposit could also suffer a bit of value loss. Just enough to make spamming not worth it. I wonder what would be just enough here. It ought to be less than what would make it undesirable for almost all users?
Edit: I feel like the main problem with social media innovation is that there's very little possibilities to experiment. You need a good amount of users to test something out and users will only go to established services.