no comment no vote, sounds better, but what if for isntance you have the same person posting a comment to just to give you negative karma and its thesame peopel over and over ... this can go on for ages ...back and forths .. this is real valid reason I prefer to get rid of it totally.

The only good karma I can see working out, is for example in the forums, someone has a question and you answer it to best of your knowledge the best thing can be is to have a Thank you and it posts the thank you see more under your posts ... this is another way of getting a good positive comeback of karma.