Which are your favorite DE's and WM's ?
I love minimalistic and lightweight DE's and WM's so my favorites are:
Xfce - Its very lightweight but yet full featured DE built on gtk base. Highly customizable.
LXDE and LXDE-qt - Very lightweight full featured DE based on gtk. Also there is now version LXDE-qt because LXDE developers choose to move on qt as base for their DE.
Openbox - Great very lightweight wm
Awesome - Its really awesome its not full DE "just" WM but its awesome.
i3 - tabbed wm
Blackbox, Fluxbox - old minimalistic wm's
FVWM - old very nice and functional wm
As you can see there is no Gnome Shell, Unity nor KDE in my list but lets that doesnt stop you for saying that you love them and voting for them.