Plus-HD 4.8 is a browser extension, plugin or addon for Google Chrome and Mozilla Firefox, also called a Browser Helper Object for Internet Explorer and is most likely responsible for the Plus-HD 4.8 advertisements. Plus-HD 4.8 itself pretends to promote videos from Youtube into HD Quality. The Plus-HD 4.8 and Advertisements are everywhere once you installed this Plus-HD 4.8 adware into your browser. Plus-HD 4.8 delivers Deals as Coupons for websites as Expedia, Amazon, Walmart, Best Buy and probably more. It does so by showing ‘See Similar‘ buttons and ‘Plus-HD 4.8’ window on the website you are visiting, or a in-line text advertisement using text ‘Powered by Plus-HD 4.8 ‘. A large toolbar of some kind may also appear in your browser or a small ad appears showing you how many coupons there are available for that specific website with text ‘by Plus-HD 4.8’. This adware is spread thru different locations. You may be downloading it from there official site because it saves money while shopping online, or you may have got it bundled with some fake update or free download you installed on your computer.
This adware is made for one thing, and one thing only. To investigate your browsing behavior using domains as superfish.com to make money. Once you use a coupon that Plus-HD 4.8 delivers to you, Plus-HD 4.8 producers make money or at least benefit from it.
It is advised to always read the Terms and Agreements before installing software on your computer. Do never click too fast thru the installation process [Next] button of software as you will agree to software you might not want to install. If the installer offers a Advanced or Custom option button, click it to find out if there is any other malicious software offered and installed during the installation process.