The "Charm Bar" follows you through the entire site. It is list of popular shortcut links. When you login to MySB, you can customize the links on the bar. There are approximately 25 different charms to choose from.
If your screen width is less the optimal, the Charm Bar will tuck itself away as a “tab.” Click on the tab to open the Charm Bar. If you are in “mobile” view, you will have a “Close” button that will allow you to return the Charm Bar to the tab when you are done with it.