To be honest, I probably should have done this when I first created WPVote.com – but there is now a WPVote Facebook Page. This means you can get updates on new posts much more easily. I also changed the facebook login/ registration plugin over to a new plugin, which allows a slightly more flexible approach.
To do these things I used the Simple Facebook Connect plugin by Otto.
If you have any other ideas for WPVote then let me know them in the comments