I don't really like the analog "nub" on the PSP and avoid games that make me use it. These little replacement snap-on joystick covers mitigate that flaw -- they're easy to grab, stick up, and increase the "throw" of the joystick.Unfortunately, they also stick way up into the air, making it impossible to use a normal PSP carrying case such as the wonderful Logitech PlayGear Pocket case, or even the propylene sleeve that comes with the unit.As much as I want to like these things, they're just too impractical for my *portable* unit.