Yeah the y-axis, I voted no because I didn't realize it :P

In diving/flying simulators only

I use to invert for console FPS, never PC FPS. I stopped when I forgot to do it for Halo 3 and never looked back. I try now and it's insanely hard. Default ftw.

I don't use it, I feel like I'm pointing a gun and not controlling a plane. I use inverted y-axis for vehicle-based games (spaceships, planes, etc) and normal for every kind of shooter.

ever since playing starfox for super nintendo I have to invert the Y-axis for all the games I play...

I should mention that on PC games I never invert. The analog stick feels different from a mouse.

Whatever.

Pretty split down the middle of yes and no, and at least 12 Star Wars fans!

I only invert the x-axis.

I used to but I had to get into the habit of not doing it to be the same for all the games.

I only invert on consoles, and I always invert on consoles. NEVER on PC.

Edit: Clarification, I always invert (only Y of course) for shooters on consoles. Never invert for shooters on PC. In terms of flight sim-type games, always invert the Y-axis, regardless of console/PC.