Userscripts.org

Adds "quote" links to Metafilter comments.

Allows styling of comments and posts by who wrote them

Tracks your last-read comment in threads, and allows you to jump back to it easily. This script is known to work with Firefox/Greasemonkey, Opera, Chrome, and Safari.

Annotate MetaFilter user-links everywhere with an indication of user-number.

Adds your personal notes to a metafilter user profile

Replaces the linked comment triangle pointer with a hedgehog.

Unicorn and narwhal buttons plus laser kitty on deleted posts

Highlights posts with lots of comments

Highlights multifavorited comments with bars whose width indicates the number of favorites; cannibalized from flatluigi's script

Marks contributions from all librarians on MetaFilter.

Navigate users' comments in Metafilter threads. Highlights comments by you and the original poster, and Metatalk comments by the admins.

Maps MeFi tags to social bookmarking tags.

Hover over favorites count in MetaFilter comments to see which users favorited the comment.

Shows deleted posts on MetaFilter. This script is known to work in Firefox/Greasemonkey and Google Chrome.

This is a very simple script that hides all anonymous questions on Ask MetaFilter — http://ask.metafilter.com/. No offence is intended towards those who appreciate anonymous questions. I simply prefer a MetaFilter that does not include them.

Helps you keep track of questions and posts you want to make later. NOTE: AskMe Question Pad changed names. You may need to manually uninstall the script with the old name.

Shows the contact activity sidebar on every subsite

Turns the submit button into a unicorn and the preview button into a narwhal (100 px version)

Makes the submit button be a unicorn

Rename from "faved" or "... favorites" to a phrase of your liking.

Adds a "Playlists" tab to the Mefi Music tab bar, and adds the tab bar to most music.metafilter pages

Adds an e-mail icon next to each user so that it is easier to contact them via MeMail (MetaFilter Mail Messages).

When you click on the tick/check next to a question, jump to the first 'best answer'.

Removes any indication of 'best' answers from AskMefi.

Removes non-'best' answers when you click on the best-answered tick/check.

change the name of favorites

Adds "why?" links to old stuff in Recent Favorites that were newly favorited. Links to a search for the URL, which will hopefully show you a link from another comment.

Mark contact contributions on Metafilter

Navigate users' comments in Metachat threads.

It's a MetaTalk thing. http://metatalk.metafilter.com/16189/#540118