Responsively or manually hides Reddit's sidebar.
Source Code: https://github.com/dmck/responsive_reddit_sidebar
This extension for Google Chrome hides Reddit's right sidebar when the window is less than 768px. The sidebar can also be toggled manually with the "Show Sidebar" link, or locked in place with the "Lock Sidebar" toggle.
The left sidebar (listing-chooser) is closed when not on the Front Page.
Special thanks to Hrishikesh Bakshi for writing Reddit Hide Sidebar!