Instant YouTube Blocker is a very simple tool designed to block or unlock in Windows the ability to use the YouTube video website. The tool is addressed to parents who would like to restrict their children's access to YouTube, as well as employers and administrators who would like to block access to the website during working hours. Instant YouTube Blocker is very easy to use, and the option to block/unblock access to YouTube is limited to clicking one button in the main program window.