Thanks to games like DrawSomething, we now have a need for rather small styluses for our phones. The screen is already a bit too small to have an entire keyboard on it, but to draw a decent picture with the pad of you finger is just downright difficult. This is why an item like the MicroStylus might be useful.
It plugs into any 3.5mm jack, and can be kept there for storage. Once it’s in use however, it may actually be a little harder to handle than just dealing with using your phalanges. It is convenient and small, but a little too small if you ask me. People with meaty fingers would likely end up being even more upset for spending $10 on this, as they would instead end up covering up the screen trying to hold the thing more than being able to use it. A good idea, but a little too tiny to be useful.