Micronized creatine is a much smaller particle than regular creatine, so it helps to eleviate some of the bloating, cramping, and runs that some have complained about. How? Well, it is absorbed much easier through the intestines due to its size. Larger particles do not pass easily through the small intestines and therefore may draw more water into the intestines and cause the bloating and such. So, smaller particles, better absorption.
Creatine works and works well for most. Some are classified as non-responders, but not 100% sure the cause of that. If you respond, then it will likely be in the form of weight gain and an increase of power. You will recover a bit quicker with creatine as well. Including more protein in your diet while using creatine may aide in retaining more of the gains you made, but there is still the chance that you will lose some strength and size after a few weeks of cessation. Should you use it? Why not. Who wouldn't want to risk gaining some size and strength on a rather harmless supplement, provided you remain well hydrated.