There are many rules for chopsticks but one rule which I would like to touch upon is to never, ever stick your chopsticks into a bowl of rice and leave the chopsticks sticking straight up.

Don't stick them up your nose.

I do, however, sometimes put one in each corner of my mouth. It kinda looks like a demented walrus with anorexic tusks...

Don't use them as drumsticks and beat on everything around you.

fk the rules. Do whatever you want.

Never use the chopsticks to point at another person, its rude and threatening.

Only pop zits on the face of the person sitting on your left with your chopsticks, to do this on the right is bad luck. Also, I recommend doing this after the meal is finished so you don't have to put them in your mouth after. Also, don't do this after eating crispy duck, it's too oily and will only bring out more zits.

an etiquette i like to see more is to hv a spare chopstick on table for servin'. noticd in hk many use the opp end of their chopsticks to serve othrs.

I prefer 'lategrao' over 'duriouscrude' 

That's called 'magrana', I chink ......