If I snap the window to take up half my screen, the dumb (un-hideable) sidebar ends up eating most of that screen space.
I wrote a dotjs[1] script[2] that solves exactly this by letting you toggle the sidebar on and off.
[1]: http://defunkt.io/dotjs/ [2]: https://github.com/timothyandrew/.js/blob/master/reddit.com....
EDIT: Formatting