We've got a new voting system with the relaunched Progressive Bloggers. One votes for individual posts on a scale of 1 to 5. Can't say I care for it.
Like, why vote anything but 5? Is one signalling: 'This post is sorta interesting, but not as interesting as this blogger usually is, or not as interesting as other bloggers on the same subject, or I don't like this blogger and s/he is getting way too many 5s?'
So. If I vote for a post, I vote 5. Otherwise, I don't vote and don't affect the score given by other people on the blogger/subject/treatment.