I occasionally write little scripts to modify bits of this site to my liking, and figured I'd post them here in case anyone else finds them useful. These have been tested and verified to work in Chrome (natively) and Firefox (under Greasemonkey), but should theoretically work in any modern browser that supports userscripts.
Glitch Online Buddies: Install | Screenshot
Applies to: http://www.glitch.com/profiles/*/friends/
– overhauls the display of the "Online buddies" section of Friends pages
– reorders entries alphabetically by location name, making it easy to see when multiple friends are in the same location
– groups new housing locations at the top (and fades out the name if the friend is on their own property)
– distinguishes between separate instances of the same location (e.g. party spaces, Game of Crowns) when you have friends in more than one
– removes the "Connect with Facebook" section on your own Friends page
– hides the "Buddy list" section until you click, in order to speed up page loading
Glitch Ballot Results: Install | Screenshot
Applies to: http://www.glitch.com/ballot/*/results/
– reorders ballot results in descending order of votes
– shows percentage of votes cast for each candidate