I have in recent past spotted many lifted cars, what are the advantages of this.

well, a raised car is usually fitted with suspension lift kits. lift kit is a collection of springs that raise the body of the car above its normal frame. the springs serve to reduce the impact of rough terrain on your car, they reduce the impact of collision in the event of an accident and increase the aesthetic appeal of your jeep. http://4wheelonline.com/ProCompSuspensionLiftKits.459