Get Rid of OptiShopper Easily, a Brief Tutorial about OptiShopper

OptiShopper is an adware as well as a potentially unwanted program which is very harmful for your computer. It enters into your computer when you visit malicious site or download some freeware, shareware, or free games from an unauthorized source. This PUP enters into your computer without your permission and thus can’t be easily recognized or removed. This adware does not allow you to make your own searches and redirects you to other malicious site when you try to make a search. These redirected sites may contain more viruses and threats. It is the result of bundling that OptiShopper enters into your computer. So remove this adware immediately from your computer.   

http://www.threatremovalsite.com/how-to-remove-optishopper/