Well, that's a very good thing, sir. Because I also prefer to skip posts that I don't like and I don't want to sent (-) Karma.
~snip~
Negative karma is not given for a post you don't like, but for things that somehow violate the rules of the forum (
read here), and if you see such a post and do nothing (whether it's negative karma or report to the moderator), then you've actually done a bad thing because you're practically supporting someone who does something they shouldn't.
If I knew which of my replies or posts got minus karma then I wouldn't be so stressed about it. 
admin is working on this option, but it is not an easy task, so it takes time. Let's be patient and hope we can see which posts get karma soon. 
It's not just about who got negative karma for which post, but also which posts got positive karma. It seems to me that a lot of users have a completely wrong idea about what they should reward with
+ karma and what they shouldn't. I personally see some members who have too much
+karma compared to the quality of the posts, so it will be interesting to see how everyone will behave when they are held accountable for their actions.