You can add http://perlmonks.org/* to your "Included pages" when you "Manage User Scripts..." in GreaseMonkey.
Subjective. I feel they are more user friendly as they are single-click.
I'll take a look at the voting booth. It must use a similar form to post-voting. Update: Looks like this is a JavaScript bug when calling document.evaluate on an XPath - appears to be picking nodes with similar XPaths! Best workaround is to disable the VB node.
You do save refreshes especially in the long run. You no longer need to refresh the page (by pressing the "vote" button) before moving to another node.
I must admit I was not expecting to please everyone ;-)
Snippets of code should be wrapped in
<code> tags not<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).