Facebook is an American for-profit corporation and an online social media and social networking site based in menlio park califonia the facebook website was blaunched on february 4.2004 by Mark Zukerberg along with fellow Harved college students and roomates, EuardoSaverin are the founders had intiantly limited the web site membership to harved students however, later they nexpanded it to a higher education insitiution in the Boston area .Facebook gradually added support for student at various other universities and eventually to high school students as well as . since 2006 anyone age 13 and older has been allowed to become a registerd user of facebook, through variations exist in the minimum age requirement depending on applicable local laws .The facebook name comes from the facebook directorise offten given to United States University students .Facebook may be accessed by large range of desktop, laptops, tablets, computers and smartphones over the internet and mobile networkes after registering to use the site, user can create their profile indicating their name, occupation, schools attended and so on . User can add other users as friends exchange message, post status updates and digital photos share digital videos and links use various software application(apps), and receive notification when other updates their profile or make post .additionaly, users may join common -interest user groups organiged by w2orkplace, school, hobbies or other topics and you can find many other friends and you can do many things in facebook and also you can update your profile picture and a cover photo, status you can chat with your friends an dshare many things on it .so if you don, t have your face book profile so create and use it and if you have any doubt about facebook pls pls comment in the commentbox and click on like Thankyou.