Recently, I finally got around to looking at the scripts available for the Firefox plugin, Greasemonkey. I was not expecting what I found.

From the main site:

Greasemonkey is a Firefox extension which lets you to add bits of DHTML (”user scripts”) to any web page to change its behavior. In much the same way that user CSS lets you take control of a web page’s style, user scripts let you easily control any aspect of a web page’s design or interaction.

For example, you could:

Most of the scripts are fairly innocuous and are designed to help users get more out of various websites.

But MANY are designed soley to strip ads from pages, remove redirects and even change affiliate links.

Here are some examples:

Bloglines Moreover Ad Remover
Description: Get rid of ads in moreover feeds on bloglines
Written By: Mysteriously Unknown

Ad Blocker
Description: Block advertisements
Written By: Mysteriously Unknown