Greasemonkey is a Mozilla Firefox extension that allows users to install scripts that make on-the-fly changes to HTML web page content on the DOMContentLoaded event, which happens immediately after it is loaded in the browser. As Greasemonkey scripts are persistent, the changes made to the web pages are executed every time the page is opened, making them effectively permanent for the user running the script. Greasemonkey can be used for adding new functions to web pages (for example, embedding price comparisons within shopping sites), fixing rendering bugs, combining data from multiple webpages, and numerous other purposes.
Not just that, with Greasemonkey we can remove all ads. Well I don’t hate ads; I do love ads. But sometimes there are a lot of inappropriate ads on some websites. Those ads sometimes block the content and ask you to fill out a survey, which sometimes leads to cookie stuffing and cookie stealing, and I hate those kinds of ads. This article is about removing those kinds of annoying ads.
To install the Greasemonkey Firefox extension, go to this link: https://addons.mozilla.org/en-US/firefox/addon/greasemonkey/.
You can download CPALead Remover to remove content locked by CPALead.
Hundreds of scripts, for a wide variety of popular sites, are already available at http://userscripts.org.