Your post makes me think that steam should have a world map where you can track the locations of people currently playing a certain game. I would love to see how GD has infected people world-wide.
And…level 10 you say? What are you doing here, get back to the game!
Also, be sure to look in the options, there are 2 different modes of mouse behavior and it is quite possible that the less popular choice is on by default. Uncheck classical targeting and see which you prefer.