If you get ads, popups, notifications from VirtualRotator, your Mac is infected with adware. VirtualRotator is adware for Mac.
VirtualRotator changes setting on your Mac. First, VirtualRotator installs a browser extension in your browser. Then, after VirtualRotator hijacks your browser, it modifies the settings in the browser. For example, it changes the default home page, modifies search results, and displays unwanted pop-ups in your browser.