Etiquette of eating crab and other shellfish

I had an interesting experience today going to the Chinese restaurant with mis amigos chinos. We ate crab and I had to place to put my shells. I asked the chinos what to do and they said to just put them directly on the table. I was twitterpated! How rude is this? But its not. So here are some guidlines for eating crab.

1. When eating at a Chinese restaurant, you may just put your shells whether they are shrimps, clams, oysters, lobsters right on the table. BUT NOT WHEN YOU ARE DINING AT SOMEBODY'S HOME.
2. When eating crab at a European or American setting, you will get a plate to put your shells.
3. You will also get a finger bowl so that you can clean your hands when you're done. A crabfork and crackers will also be given to you at a classy place. It should be placed above your plate before you arrive to your seat.

While we are talking about the Asian restaurant, you must know some etiquette that is different.

1. At a most Asian diners, you may be given wooden disposable chopsticks. In Japanese culture it is insulting to sand your chopsticks together to get rid of any splinters.
2. It is recommended that you wipe down your chopsticks if they have been sitting at the place for awhile.
3. Never stick your chopsticks into the rice and leave them there.
4. When eating rice, bring the bowl to your mouth (totally not okay in European dining)
5. Do not expect 5 star service when going to your local Pho place. They will tell you where to sit as soon as you walk in. When in doubt, just get the Number 1 large. Don't ask questions.
6. All Asian restaurants serve complimentary tap water. Most serve complimentary tea. This isn't normal for Europeans because in Europe it's rude to ask tap water.
7. Tipping isn't a city in Taiwan. You should tip like you would any other American restaurant.
8. When asking for more tea, simply leave the lid open.