Userscripts.org

Adds a Wikipedia-style special characters box to Y!A default editor

Shows a fake message box. Used for pranking.

Adds Yahoo music player to play MP3 found on any page.

Adjustment of -14 games needed to calculate actual projections in Rotisserie leagues.

Makes "mailto" links open in your favorite web-based email account, instead of a pop-3 client (like Outlook, Eudora, Thunderbird, etc.) Supports Gmail, Yahoo Mail, and Google Apps Mail. [UPDATED Dec 2011]

Remove Facebook "like" buttons/iframes/widgets/shareboxes from other websites, along with google plus, linkedin, twitter, sharethis, etc. Supports dynamic sites (AJAX, etc.) as well. Works in Chrome, too! (inspired by rnaud's script #76037)

Change the text direction of a Yahoo! mail message content from left-to-right to right-to-left and vise versa.

Replace text emoticons by equivalent Yahoo flash emoticons

Tweaks Y!Mail Beta (neo) to minimize wasted space on top.

Removes Ad in main screen and removes Ad Sidebar. Also optimizes Y! Mail header space in new beta released Oct 2010 Updated Oct 21: Latest ad slot change and fix.

Forces you back into Yahoo Mail classic for those of us with slow internets or love retro technology.

Adds movie torrent download links and search links for IMDB, Rotten Tomatoes and Yahoo movies pages. Lists torrents to download movies/trailers from the best torrent sites within your favorite movie site.

Yahoo emoticons bar for Facebook.

When you click on the Report Abuse link in Yahoo Answers, it will automatically report that question/answer as spam.

A yahoo mail new advertisement remover

Enhance Google and Yahoo search results to be accessible from the keyboard.

Finds information from Facebook, Myspace, Yahoo Messenger, Google Profiles, Picasa, etc. for all e-mail addresses found in a page and displays them on mouse-over.

Displays hitter matchups on the Yahoo Research > Matchup Ratings page in the "Comments" section. Also makes the "Matchup Ratings" sub-tab the default under "Research" instead of "Overview".

Replaces text-based emoticons on Facebook, Twitter & Google+

Highlights questions on Yahoo Answers based on their status.

Makes the viewing pane wider. Runs in the background for a few hours.

Removes unnecessary top header in yahoo mail beta (neo).

This script will hide the big Ad panel shown in new Yahoo! Mail. Will also resize and reorganize the top area, leaving more vertical space for your mailbox.

Replaces tracking link (dirtyhref) with true link (href). v0.1.0 2011-04-25

Find and play mp3 files with yahoo media player

Rewrites file links in yahoo groups (a) Have Sane Links (b)Don't time out the links

removes the ads+expands space Motty Katan(c) Beta is Supported too. 06-02-2006 last updated 19-03-2011

Adds alternate search engine links to Google web search. Works with instant search.

Hide comments on CNN, Yahoo and other news sites

Makeshift integration of Yahoo! Calendar as application tab in YMail