Maybe it's just that pg's comments are more relevant to this community? If a nickname didn't lend credibility to a comment, we could all post anonymously. Also

Maybe it's just that pg's comments are more relevant to this community? If a nickname didn't lend credibility to a comment, we could all post anonymously. Also, users of this community likely want to read pg's comments, and upvoting is the surest way to get them noticed.