It's easy to get comment karma, as well. You just have to be the first person to post the generally prevailing opinion on whatever the current topic is. Then everyone who was coming to post the same thing will just upvote you instead.
Yeah, let's just have an infinite number of separate karmas to measure every attribute of each comment.
It's not that quantifying all of these things wouldn't be great, just that you very quickly will end up with a system way too complex to be reasonable.
But there's all kinds of issues. How do you display them all (especially if you exceed 2 sets of arrows)? How do you remember which one is which (again, not a huge issue if you just add one more karma type)? How much will having to sort by several karmas slow down the site?
