Democracy mode is great! But a couple of players (and I) figured out that multiple key presses by a user are counted, so we have more of an oligarchy determined by whoever can spam keystrokes...

I like this one a bit better because it shows vote totals and has a visible countdown:

http://voting-2048.herokuapp.com/

Democracy mode needs a chat to scream about the occasional horribly stupid moves voted (merge a mid-value pair that prevents a win because it blocks in a low value cell between the 256's)