Ssindain pretty much covered it for ya there. In other words.... procs = best friend ever. Just as a good example for what they can do... I used triple arrow and parsed the shot, the arrows themselves did almost 1500 DMG but the actual shot it's self did 7500 dmg. Meaning that 6 k of my dmg on that shot came from procs, from poisons, stance, bow proc, sword proc and shield proc. :0) So if you have a wep that isn't proccing on your bow somethings wrong and it needs to get fixed. Unless when you examon the proc it says "on a successful MELEE attack this has whatever % chance to proc) than that will proc only when meleeing.
LeoricLevel 60 ranger