You can set the orientation to left or right, set the minimum, default and maximum width and the behavior on browser startup.

All-in-One Sidebar provides enhancements for many built-in features, which are related to the sidebar.

Keyboard shortcuts (default settings)

All keyboard shortcuts are fully configurable. So it would be possible to prevent collisions with other extensions. Open the options dialog to configure the shortcuts, click the button "Shortcuts" and change them to your needs.

I just un-installed Firefox 3.1 Beta 3 b/c it was
creating a conflict with a lot of my other applications. When my Firefox 3.0.8 was re-installed all my settings, addons & BOOKMARKS had disappeared. Fortunately I
had made a backup of my bookmarks in "aio"
(---otherwise, I would have lost about 3 years worth of bookmarks) I re-installed "aio" and restored my bookmarks. That is just one of many features that I really like!