Well -- I guess I should be proud. For the first time today, some AC posted that I was a Karma Whore, with the suggestion to look at my user page for evidence
In some sense of the word, I suppose it's true. I tend to write comments only about material in which I have personal knowledge, or express well founded opinions without resorting to ad hominem attacks.
Would I continue to write were it not for the positive feedback one gets from /.-karma? Probably not, but I suspect that was one of the motivating factors for CT et al to add moderation and karma in the first place.