Bought a set of 2 from ebay as well after reading the recommendation here. The suction cups goes off the viewable area of the screen a little but it fits and works fine and doesn't obstruct gameplay. Played Death Worm for 2 hours with it and a bit of Gun Bros with both to control movement and firing and it really made controlling a lot easier than using my finger. The only issue that I should note is that if you have a screen protector that uses the material like Zagg's Invisible Shield, Ghost armor, or skinomi (basically the rubbery type protectors) it makes extreme movements a bit difficult because of the friction with that type of material. Honestly, it happens with my fingers too so I don't blame the joystick. All in all I highly recommend it if you play games that have a large touch joystick. Currently waiting on normal plastic screen protectors and will see how the joystick work with them.
