I am not sure I disagree with sharing the tips if it is done in a fair way. As a waiter in many North American restaurants in my past, both upscale and not so, I paid something called tip pool in most places.
Cooks, hosts, bar staff, etc were given a higher salary than the waiters though also..this is where this works. As a waiter, I would hand over 2 - 2.5% of my gross sales for the night into tip pool and that was split between the other workers according to the importance of their job. As the waiter I made 15 or 20% of that gross amount in tips, so I would take home a good 10 - 15% after sharing.
I see this as fair because if you go to a restaurant, the food, ambiance and service play an equal role in the overall experience, so these people should get some piece of the pie...
Having said that, the topic seems to be, well ummmm, off topic..I was simply asking if people in the community tip the gas, water and hair guys..:)