If your browser shows annoying popup ads with information that you should install MacKeeper or something like that, your system may be infected by adware. Usually, it redirects browsers to commercial sites, affiliated with MacKeeper company. In fact, MacKeeper is legal software, but the distribution method is very aggressive and may be classified as an adware. MacKeeper pop up ads usually appear on the different devices: PC, Mac, iPhone/iPad and on Android devices.
Search-mate.com is a browser-hijacker, analog of Weknow.ac, Searchinow.com etc. Designed by the Search-Mate company (Israel) Searchinow.com can infect user's Mac and share users personal data with third parties, including affiliates and parent organizations. Besides, the hijacker replaces a search engine of browsers with own, based on Yahoo and Bing. It may lead to increasing of sponsored links in search results and downgrade quality of search.
Finditnow.net, as well as Finditnow.net, Search.bittsearch.com, Search.bittsearch.com is a browser hijacker designed for Mac. When the virus infiltrates the user's Mac, it replaces a homepage on http://finditnow.net on Google Chrome, Safari or Mozilla Firefox and other browsers. Besides, hijacker setups an own search engine and hold all browser settings.
Searchitnow.info or SearchItNow is a typical browser hijacker, which usually targets Mac users. First symptom of the virus infiltration is new homepage http://searchitnow.info on Google Chrome, Safari or Mozilla Firefox. Besides a new homepage, which is replaced without user permission, hijacker changes a default search engine and sometimes blocks all settings, related with browser homepages and search engines.
Search.globalsearch.pw is one of the most common type of malware - browser hijacker. This changes the browser settings without the user's consent, setting http://search.globalsearch.pw/ as the default homepage and search engine in Safari, Firefox, Chrome and other browsers installed in your system.