EDIT: userscript.org seems to be having lots of server trouble of late. Therefore the following links may not work.
Greasemonkey is a Firefox extension that allows you to run scripts on the webpages that you are viewing. For example, one famous script was adding a delete button to Gmail (Gmail has since added a delete button).
One of the cool things we can do with greasemonkey is hack Facebook.
If you have 1.5.0.1 like I do follow these directions offered up by Lifehacker.
1. Go and install Greasemonkey
2. Make sure the lower right part of your browser looks like this:
3. Click on one of the links below.
4. When you go to install a script you will see this popup in your browser
5. Click install.
Below are some scripts I have gathered that alter facebook. One warning though is that greasemonkey only works with firefox 1.5 or below (My 1.5.0.1 apparently is too much.)
The hacks:
Facebook Autologin – automatically logs you in to Facebook (ever notice that no matter what you do facebook prompts you?)
Facebook age displayer – displays the age of the profile you’re veiwing thus negating any need for math!
FacebookSpyGlass – this is supposed to automatically enlarge profile pics when you mouse over them, however facebook has updated the way they code their pages so as of now this does not work. However the developer promises an update on the script homepage.
Random image generator – I did not test this one, but in theory it should work. It automatically changes the picture ID number in URL to generate a random picture.
Make Facebook Green – this script make facebook green. If you know HTML change the hexadecimal number in the js file to make other colors.
Cool facebook related site:
TheBillyGoatCurse.com – did you know the first person to sign up to facebook at your school is referred to as the Creator? This show shows how to find that person and other facts.
[tags]facebook, hacks, hack, facebook hacks, greasemonkey[/tags]