Hai to all viewiers. facebook it is social app to to increae our community and increse our following etc.it is the app that decrease our lonlyness by seeing the newsfeed. we can experss our feeling like photos videos to our relatives friends etc. we will not get bore while using this facebook app. when we can post one photo we get comments likes by seeing that comments we can get know how others will treated you. we get set the privacy our personal photos that can not seen by others. by facebook we can make more friends and know about that persons. we can increase our network. its is app can use world wide we can make anyone as friend across the world. that will marvellous.