The best feature of WhatsApp is that you can get connected only after sharing your personal number, there is no other means to get connected. Thus, a type of strong privacy is maintained in this social app.
The concept is a different and actual.
The layout and design of WhatsApp is perfect and absolute. WhatsApp has all features and functions required for a well maintained social connectivity.
WhatsApp is a very useful social site and the safest of all other to get connected with your near and dear ones.