And now it’s EVEN EASIER!!!
I have made some modifications to the original Sparrowscript by Sparrow. The new version still has all the original functionality; it also counts votes on individual post pages and displays the count above the post. It automatically detects vetoes and self-kills and notes them along with the vote; it also handles the proposer’s implied FOR vote. As a user script, it requires Greasemonkey on Firefox to run; Opera may run it as well, as apparently it is GM-aware. The new version is here.