Hi, I am going to tell about Facebook. Facebook social network has been started in 2004 and I am using it for past 11 years. Im noticing the changes in Facebook. Day by Day they are changing the features and they are improving this social network. Now a days without Facebook there are very less people. Anything happens in our life we are sharing it in Facebook instead of sharing with others. Im not telling about that it is not good but we too focus on our relationships. Facebook team has implementing new technologies like live videos, promoting pages. Facebook now into business promotions also. So many are earning using Facebook also. They introduced Facebook and Messenger apps also. it is consuming more space in phone that is the reason they introduced the lite versions of Facebook and messengers. lite versions are very good and less consumption of space in mobiles. Coming to the security of content in your Facebook it is purely depends on your security settings whether it can be shared publicly or privately you can choose it. Security settings of Facebook are also very good. They gave option to maintain a page for our Business promotions and can share information publicly. options like call button, message etc. are very good. Service support also very good we will get effective replies from the service team. Very user friendly interface. Loading of website is very fast and Facebook app is little bit slow.