Pretty sure it's going to be some kind of "tipping" system, where it can be traded for real money.
Cue massive invasion by bot farms, this always happens when there is money to be made from posting/generating something. It's going to go downhill so fast.
They'll introduce Moons, as used in r/CryptoCurrency, site wide. Ticks all the right boxes of a monetization scheme, and the value even appreciates when people are forced to buy Moons.