(Originally posted 2005-06-29.)
Greasemonkey allows you to modify web pages you’re browsing. Such modifications include
- Inserting HTML into a page.
- Deleting parts of a page.
- Mergins stuff from another website.
At its most basic you can essentially get rid of annoyances in web pages that you consider to be poorly designed.
Note: This only works for Firefox. Personally I almost exclusively use Firefox. (I really like its tabbed browsing feature and the ability to write/obtain extensions that customise your browsing experience.)
GreaseMonkey is available from http://greasemonkey.mozdev.org