honestbleeps/Reddit-Enhancement-Suite — pull request #475 by Xavdidtheshadow (2013-07-24 05:32:58+00:00)
Title: Added setting to hide/show the multi-reddit sidebar by mousing over it instead of having to click. 

This could also be used to hide the bar by default (using another function/setting) if someone (or me) wanted to put that together.