Assalamualaikum
I have been working in some crowdsourcing websites in my leisure like ‘Microworkers’, ‘Picoworkers’ where upvoting reddit posts is one of easy small earning works they offer. Usually those reddit post are related to low market cap crypto-currency promotion. I am now confused whether this income is halal or haram as I am promoting them indirectly. I will request you to check some promotional posts in the sub-reddit they often use to post those posts.
Sub-reddit link: CryptoMoonShots