Hi. I would like to announce Wassapp, a non-official WhatsApp client for PC. This application basically allows any user to chat with his WhatsApp contacts from a computer (using a phone number that has been previously registered in WhatsApp, using a smartphone or any other method).
Start chatting is as easy as introducing your phone number, your password (depends on which device you registered your number in WhatsApp), and adding your contacts.
If the phone number was registered on an Android phone, the password is the phone's IMEI.
If the phone number was registered on an iPhone, the password if the WiFi MAC address.