Smartest.click is a very malicious site that may appear in your browser unexpectedly. It will then redirect your browser to some other domains that are known to promote various potentially unwanted programs. This has been noticed on Mac OS X, however, Windows operating system may be exposed to similar problems. In fact, when smartest.click pop-ups are ongoing in your browser this actually means that the system is contaminated with certain adware, so you obviously need to perform the measures set forth below to get your system thoroughly fixed.