I have been using Vote it up on my blog for a couple of years, although no-one else has, I think I received one vote that wasn’t me and they also commented. I noticed during the Autumn of 2014 that it seemed a bit broken. So I had a little look and decided to replace it.
In Nov 2014, this started to display all votes as at zero, even after accepting a vote and disabling the vote button. This is documented on it’s own page on this wiki, and here are some potential alternatives,
Probably in the order worth trying.