In 2006, Facebook become available to anyone 13 years old and It caught on very quickly all over the world. especially among teenagers. Whenever they went online they took the time to post comments on their lives and to check messages from friends. They also uplonded photos and visited their friends' Facebook pages in order to post updates. However, Facebook and similar social networking sites may be losing popularity among teens. Only 25% of teens in a 2013 study in the US kept in touch daily with others through these sites. And in a small study in Australia,nearly one-third of teens questioned did not have , accouhts on any social networking sites. Even Facebook's own 2014 business report contains information about less teen interest in the site. It looks like Facebook and other social networking sites have to soive a problem : now to keep teens interested!