I can say I clean my face nearly everyday - I don't wash it tho. I use cleanser, toners and makeup wipes daily.
Only times I don't do it is when I haven't worn makeup or am beyond extremely tired and way too lazy to not remove my makeup (which is rare but has happen now that I'm sick). But those days are far in between. So I voted 1-2, simply for the days that I don't wear makeup.
i never wash my face before bed. i wear bare minerals, and use an awesome cleanser in the morning (purity made simple from philosophy). i wake up with black smudged all over my eyes, but i don't care. the more i wash my face the more irritated it gets, so once a day in the shower is good for me.
NEVER, unless I'm sleeping over at someone's house after a houseparty ...we tend to stay up the whole night & sleep around 2 hours after 7 am, so I never find the chance to wash my face then : p