Whatsapp Privacy ... Is it Safe ?

How WhatsApp Works ?

WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS. WhatsApp Messenger is available for iPhone, BlackBerry, Android, Windows Phone and Nokia and yes, those phones can all message each other! Because WhatsApp Messenger uses the same internet data plan that you use for email and web browsing, there is no cost to message and stay in touch with your friends.
In addition to basic messaging WhatsApp users can create groups, send each other unlimited images, video and audio media messages.

How Popular WhatsApp ?

WhatsApp, the popular mobile instant messaging service, claims to have 400 million monthly active users. WhatsApp is supported on most Android, BlackBerry, iPhone, Nokia, and Windows smartphones. All Android phones running the Android 2.1 and above, all Blackberry devices running OS 4.7 and later, and all iPhones running iOS 4.3 and later. However, some Dual SIM devices may not be compatible with Whatsapp, though there are some workarounds for this.

WhatsApp - Safety, Privacy & Security ?

WhatsApp communications were not encrypted, and data was sent and received in plaintext, meaning messages to easily be read if packet traces are available.
The primary concern is that, WhatsApp ask users to upload their entire mobile phone's contact book to WhatsApp servers, so that WhatsApp could discover who, among the users' existing contacts, is available via WhatsApp. While this is a fast and convenient way to quickly find and connect the user with contacts who are also using WhatsApp, it means that their address book was then mirrored on the WhatsApp servers, including contact information for contacts who are not using WhatsApp.

Experts looking Whatsapp company to fill this big hole and suggest you to keep away from Whatsapp if you are concerned about safety. Otherwise you can create dummy profile only for WhatsApp.

Where I can Download the WhatsApp ?

You can visit their official website and selct your phone type before downloading. The link is given below