Google Chrome allows two ways to install our ad block software. Firefox will start the installation of our ad block, and will ask you to confirm that you trust the author. Firefox will prompt you to allow Adblock Plus to install the add-on: Click on 'Allow'. If you use the Mozilla Firefox browser, click the install button on the Firefox installation page. Adblock Plus is still able to remove these with a functionality called 'element-hiding': based on certain specific characteristics, Adblock Plus is able to hide certain elements from the webpage. Blocked ads often leave blank spaces or 'Advertising Tags' on webpages. With these filters enabled, it can block specific requests from websites, usually the requests to serve an ad. Out of the box, Adblock Plus comes without any filters, but, it will offer you to add a filter subscription on first start. In order to block ads, Adblock Plus requires the so-called filters to 'tell' it which requests to block. Its primary purpose is to remove all intrusive advertisements from your browsing experience: YouTube video ads, Facebook ads, banners, pop-ups, pop-unders, background ads etc.