How do downvote's work?

I don't think they can cancel out upvotes. I think imgflip just keeps track of how many upvotes and how many downvotes, and they're factored into the formula that determines the position of the meme relative to others in the Hot stream.

With comments, enough downvotes can hide the comment.

Oh...

I think you lose points for downvotes.. Idk, I saw someone say that in a thread before, so don't quote me on it lol

That isn't true.

That's why I made it clear that I was not sure if it was true or not..

I feel like that would be stupid, because sometimes you have to downvote a meme, because it's genuinely bad, not because you're just being a dick.