WASD when mouse is involved.
Agreed. I also like having FPS-like controls in a flash game, which gives the user more control on things to happen. But for a simple dodging or crushing or driving game that involves only moving around, there's no need for WASD.
One more thing, WASD were not invented for the left-handed people, most of them use the mouse with their right hand and happy to use their keyboard with their left hand.
Also, since most of the non-flash games nearly stopped using arrow keys, laptop producers started to give them less space, as my HP Pavilion does. I've seen a couple of other models like this and i don't like it. I didn't have the option of choosing the same model with a larger keyboard, of course, so i just bought it.