How do I make the Reading List window in Safari disappear
All of a sudden, a very irritating window or tab opened on the left side of my Safari Window asking me if I want to add the current page to my "Reading List". I don't have a reading list, I don't want a reading list, and I want this window to go away. How do I make it vanish?
MacBook Pro (15-inch, Mid 2012), OS X Mountain Lion (10.8.2)