There’s some misinformation floating around regarding Lemmy not having a karma system. While many have discovered otherwise, this is for those who may not have.
While it’s not exposed in the Lemmy default user interface, Lemmy does have a fully functional karma system and it is visible in third party clients such as WefWef and Memmy.
Do with that what you will.
Not talking about votes on specific comments. Talking about profile aggregation. I’ve done vinyl trades, clothing swaps, hired people to 3d print things, etc. For those kinds of interactions you aren’t looking at the quality of one specific post, but want to validate that it’s not a temporary account for a scam and that the user generally cares about the reputation of their name on the platform.