zlacker

>>chwtut+(OP)
Isn't it extremely difficult problem? It's very easy to game, vouch 1 entity that will invite lots of bad actors

>>abraco+nt1
The usual way of solving this is to make the voucher responsible as well if any bad actor is banned. That adds a layer of stake in the game.

>>speps+Qv1
A practical example of this can be seen in lobsters invite system, where if too many of the invitee accounts post spam, the inviter is also banned.

>>supriy+mA1
And another practical observation is that not many people have Lobsters account or even heard about it due to that (way less than people who heard about HN). Their "solution" is to make newcomers beg for invites in some chat. Guess what would a motivated malicious actor would do any times required and a regular internet user won't bother? Yeah, that.