For me...
a) Don't rev the engine hard upon start up and don't turn a/c on when engine still cold
b) Under normal suburban driving, lightly throttle and keep engine between 1000 and 2500rpm
c) Always try to keep the pedal at a consistent angle rather than constantly pushing down, letting go, pushing down, etc... may not go in huge acceleration, but saves fuel and you don't need to slam on the brakes so hard if you aren't so close to the car in front
d) If I can see lights are red up ahead, rather than keep accelerating and braking; just lightly let go off the accelerator and if necessary, touch the brakes slightly. This way I'm braking earlier, but if the lights turn green, then I just go back to the accelerator without having to launch the car from a standstill had I driven up to the lights at speed limit, stopped to 0, and then had to start up to 50 again.
e) Cruise control on motorways/freeways
f) When stopped for a while, shift to neutral (I'm in an auto).
I do this so that I can get more mileage out of my car and save myself from having to put petrol more than once a week. More convenient for me too. Of course when the situation demands it, I accelerate... and I'm always at the speed limit. Just sometimes takes me a bit longer to reach it
... never had any issues with tail gating though except this one time where some overanxious mother in a van was tailing me.
EDIT: Today an R33 GTR in Chatswood overtook me and kept max-throttle at every traffic light. Poor guy must've wasted so much fuel and took quite a few risky lane changes between Chatswood and Macquarie Centre on Epping Road... and he didn't even end up in front of me since when I went to turn right off Epping Road, I picked the very right lane and got through the lights before he did.
