But there's not much point in that, is there? If he can already post to the main section without any karma, what use is there in giving himself more karma?
I suppose members will probably be more receptive if they see that the posts have been upvoted rather than downvoted, but I doubt it would do much to swing the influence on the ideas in this community.
Readers can be expected (whether or not it's so) to be more receptive to upvoted posts made by a user who has significant positive Karma.
(The account probably had 20 Karma at some point.)
I just noticed that calcsam, who just posted two top posts in the main section of the site, only has the 100 karma that he has, so far, gained from those posts.
I don't object to those posts being there, but how did he do that?
Edit: Question answered; Eliezer mucked around with the karma system to make this possible in this specific case.