Presence of Onlinelink.site pop-up ad inside the system means, the particular computer is infected with severe adware program. This is not different that the same domain. It comes inside the system while visiting shopping or commercial sites. Without any pre information, it gets attached with installed browsers including Google Chrome, Mozilla Firefox, Internet Explorer and Safari. Homepage and default search provider are replaced with some ads related domain and each new tab then appear with flood of promotional windows. It causes to share personal data with third party users to take advantage of it and make you face financial loss and identity theft. Hence, removal of Onlinelink.site pop-up ads is very important either with manual method or automatic Onlinelink.site pop-up removal tool given below.
http://www.pcinfectionremovalguide.net/download-spyhunter