but we might want to change it.
The more ways we have to encourage lurkers to register, the better. I think having a way to upvote any post will make people feel more engaged with the site, and encourage them to post comments and discussions as well. The benefits probably outweigh the harms.
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.