Userscripts.org

Allows you to switch the look of the homepage.

View Source Code of any homepage

Automatically redirects users from the what to watch tab, i.e. homepage, to the uploads only tab under subscriptions.

Gets the old order of subscriptions on the YouTube start page back.

Makes the YouTube home page wider, lets you remove videos you don't want to watch, and more.

A simple script that redirects you to your subscription's uploads when accessing the YouTube homepage among other things.

Filter DLC from Steam's "New Release"/"Coming Soon"/"Specials" homepage lists.

Shows a fake message box. Used for pranking.

Fixes YouTube homebutton / startpage. Sets all links on YouTube feed to open in a new tab when clicked.

Allows you to hide videos from the my_subscriptions page

Displays video uploads from your subscribers on Youtube automatically when entering the site or clicking the logo.

Adds link to YouTube sidebar to go directly to your inbox

Make the YouTube dislike bar red again.

[OUTDATED]This script automatically sets the view setting for Youtube's homepage to everything. **BROKEN AS OF DECEMBER 7, 2012 UPDATE TO YOUTUBE

Brings the inbox overview back to the home page

Auto harvest stock every 5-10 minutes in Facebook Tycoons (http://apps.facebook.com/supertycoons/).

Removes anoying Facebook Ads, and expands the newsfeed!

Ika-core.org utilities for Ikariam.

Filter user actions

Restore Google's "classic" user interface. (restore the white navbar, colorful sidebar icons, "cached" & "similar" links, move search result URLs underneath the snippet text, and more...)

Makes the Icefilms home page more convenient by allowing you to get to the shows you want to watch faster.

Show bookmarks on Google's frontpage (not iGoogle) - An alternative to page bookmarking, that will show your bookmarks in Google's front page.

Removes the annoying 'Set Facebook as your homepage' popup!

You can use this to poke all your currently awaiting "pokebacks" on Facebook. This also cleans up Facebook URLs. More features will be coming soon!

By default, the Flickr home page shows seven images for you, fourteen from your contacts, and seven from a group. This script expands it to 10, 20, and 20, respectively. Requires Greasemonkey 0.8.

Removes some footer stuff off the Google homepage, such as advertisements and the copyright stuff.

LAST UPDATED 29/05/2010: Add/Remove columns/rows and move things around on your homepage like never before :)

Modifies the Google homepage to imitate go.infinise.com giving the user the ability to click the Google logo or press the UP key and change the website they search (i.e. Bing, Wikipedia, Twitter and YouTube)

simply block unwanted website

Removes Chatter, ads, earn lunch money crap, and safety tips from the myYearbook homepage. * WARNING* Can make your homepage look odd because of the way MYB lays it out.