According to me the best social media site is Whatsapp through which people all the world can chat with each other it is an free social networking site where anyone can chat with each other from any where in the world You just have to download the app and to verify the number.
You can also made your own group on whatsapp and chat with various friend and there are new new updates of whatsapp new new updates which are more interesting such as new stickers There are many more features on whatsapp such as you can create your chats backup so that you can not lost your messages If you doesnt want that anyone see your dp means profile pic and status then you can go to options and hide your dp last seen and and your status and can enjoy your chating without any fear