Borrowing a friend’s computer and want to make sure you log everything out properly after? Super Logout can do the job for you. It helps you sign out of over 30 major services at once. When you visit the site, it’ll automatically start logging you out of some of the major services such as Amazon, Google, Netflix, Tumblr, and YouTube. A green OK will appear next to the service once you log out. Notably, though Facebook doesn’t seem to be on the list right now. But if you use a lot of those major sites, then this site will be great help for you.
Source: Lifehacker