Vitalik Buterin say
Right now my favorite token model is OMG-style staking tokens. Reasons:
* Not a medium-of-exchange token
* Clear valuation model (expected discounted future tx fees minus node operation cost)
* Requires running node to get returns, not passive income (so more legally defensible)
https://twitter.com/VitalikButerin/status/940429788673536000Market also reacted this tweet so quickly as I see.