I would have liked to have seen another option under "What it is the most important factor in your decision to download a game?" That is, "Game Mechanic[s]." Maybe that's covered under "genre," but I wasn't sure.
For example, I'll probably never download a platformer to my phone. I'll never download a Pacman-like or Space Invaders-like, nor probably an asteroids-like. So, game mechanic[s] is important in my selection.
I also generally prefer to download a free version to sample before buying a full copy. If a game is buy-only with no preview/pre-test, I generally try to find something else.
The last game I downloaded was "Bad Piggies," which is such a great game idea. I think the "design/build your own" to accomplish an objective is a great mechanic. :-)