Open Firefox (after downloading Adblock Plus from the add ons) Tools | Add-ons | Extensions | Press 'Options' on Adblock Plus | Filter | Add Filter Subscription
Free add-ons can be downloaded from Firefox add-ons.Answer:There are many free add-ons available on Firefox like Adblock plus, Stumbleupon, Billeo, Cooliris and Twitterfox. You can download them from the Mozilla website for add-ons.See related links.
Pre-3.9 :You go to the tools option of the toolbar then to the Add-ons section and the loaded add-ons are there under the extensions window. Post-3.9 It has it's own button.
You can use an add-on to do this. Tools > Add-ons > Get add-ons > search for "Foxfilter" > Add to Firefox > Restart Firefox You can configure the add-on and use a password to make it work or stop.
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Add ons are pieces of software which are added on to a web browser like google chrome or Mozilla firefox
If this is about Firefox, then you simply open the Add-ons window via the Tools menu. At the top, there will be 4 tabs: Get Add-ons, Extensions, Themes, and Plug-ins. All the add-ons you have installed on Firefox will be categorized under the last three tabs, most likely Extensions.
These may be treated as safe.
There is an add-on for Firefox that is called Adbock Plus. If you add that to your browser, then many ads can be filtered out. It is configurable, so you can decide which ads to block. Other add-ons that could be valuable are NoScript and FlashBlock. To install any of these, select "Add-ons" from either the Firefox or Tools drop down on the main Firefox menu (it could be in a different place, depending on what OS and browser version you are using). Once you find add-ons, then use the search area to search for any of these. Read about them and know what you can do with them before you install.
Web content filtering add on products can be used with Firefox web browser. Video download helper and framework assistant add ons can also be used. There are many other add ons that can be used with Firefox web browser besides these products.
Is this your Firefox extension? If so, you can go to Tools->Add Ons, then find the greasomonkey extension and click the Uninstall button.
Add ons or you can call them as plugins. They are small scripts or tools or a set of them that are used to increase the functionality of some thing. For example installing a Firefox add on will let you install themes in Firefox. Similarly Wordpress addons and plugins will enhance and increase its functionality.