RE: Decentralization Is Here: Kyber Networks Opens New Decentralized Exchange

That cryptothing is still new to me, but it sounds like a good thing with decentralized exchange.

What do all those comments mean that they give you xx% upvote? Are thouse purchased upvotes?

And how can they give a percentage in upvote? I only have the option of clicking upvote or downvote (I think).