[lalaland1125]

I don't think you need the token system. I think you just need some non-monetary cost.

What about just asking references to write a couple of paragraphs?

[lyaa]

Having to write a couple of paragraphs is not bad per se, just not sufficiently interesting on its own. some current referral systems already request reference letters and reward successful referrals.

It might be fun to try out a system with a limited number of referrals one can submit that rewards consistent good recommendations.