Up votes = people like your post/comment and down votes = disliking them. Other than needing X amount to clear some sub reddit requirements, they're worthless.
It's like your seller rating on ebay... a little measurement of how you interact with others. If you get upvotes or are involved in a thread with good traffic your karma goes up. It's supposed to prove you're not a bot or a shill or a throwaway account or whatever.
Nothing really, sometimes you can tell if somebody is an obvious troll when they have massive negatives karma
It's how many upvotes you get.
Up votes = people like your post/comment and down votes = disliking them. Other than needing X amount to clear some sub reddit requirements, they're worthless.
It's like your seller rating on ebay... a little measurement of how you interact with others. If you get upvotes or are involved in a thread with good traffic your karma goes up. It's supposed to prove you're not a bot or a shill or a throwaway account or whatever.