Often only one bowl a day, but I take quite a few days off.
Occasionally I have been known to smoke two or three, but then I start to crave it and I start to get diminishing returns on the flavour because it wrecks my tastebuds so easily.
I just went two weeks without smoking anything and it tasted damn good when I fired up another bowl.
It's good to take a break once in awhile. It rests your mouth, refreshes your palate, and stretches out your supply