Visual Match ads appear while visiting shopping websites. This Visual Match ads appear from the See Similar or See More button. When you hover over the See More button you will be presented with a large new window (popup) with all kinds of deals and advertisements on it from Visual Match. This See More is ment to show you deals using the superfish domain, in order to make revenue when you use a coupon code or deal that is presented to you by the Visual Match ads. Never ever, use a coupons or deals as you will allow the producers to make money using this adware.
This adware is spread thru all different locations but if often bundled within the installation process of free or shareware software.
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.