Tipping in Arg is definitely not rude. We tip 10% for meals, and something to whoever does your hair or hands, but generally not taxi drivers.
Response to How Did You Quit Smoking Cigarettes?:
A friend got it in my head first. And then I found out about tongue cancer (thank you, Grey’s Anatomy) and realised that if I could be alive and not speak, it was a fate worse than death. I gave myself a week of smoking less, and then quit. Seven years now.