We purposely turned off the sidebars in the forums recently to see if anybody commented on it. Since we heard nothing at all, we figured a poll may be the only way to go so PLEASE vote!
Remember, if we keep them turned on, you always have the option of collapsing the sidebars (left, right or both) by using the buttons at the top. However, if we disable them by default, there is no way for a user to choose to have them back on.
Let us know what you think!
-Admins