As a meta-example, I found this post title rather uninformative as to what the post is about, which made we reluctant to take the time to read something by someone who appeared to not be taking the time to tell me what the post was about. I figured, though, if this was a worthless post, it would get downvoted, so I the Karma system has shown some use for providing attentional capital. As we move more to an information society, having good attentional capital systems will become more important.