If you can guarantee they are human referrals, and not bot referrals, I love this idea.
Each person should have to answer a captcha, like the ones shown on Bittrex with the mountains or street signs.
The referral incentive should be mediocre, to avoid it getting exploited by greed and fake referrals. Will be tricky, but if done right, will be great for all of us...
I think there is no incentive to create bot with above referrals system because referral only gets reward with new account posts or comments and start earning...
Bots can make comments and posts too. We see that already. Artificial intelligence actually works. If you ever run a Wordpress blog, you will see lots of bot commenters.
Yes you are right! And they do bring value if their comments are valued by community by votes... And of course, proper referral implementation would not allow automatic registration altogether and can be huge plus 😊