Technology advancement is amazing. Present high-tech era let us to do anything conveniently. For instance, now it is easy to complete tasks quickly and finely by using computer. Internet has made it easy to keep in touch with your family members, fellows and business partners by using online social media networks and services. Now it is easy to keep up your liaison with anyone, anywhere and anytime by using cellular service. In addition, now people have opportunities to make their life easier than before by using number of modern gadgets.