WhatsApp Messenger is a smartphone messenger available for Windows Phone, Android, BlackBerry, iPhone, and Nokia phones. WhatsApp uses your 3G or WiFi (when available) to message with friends and family. Switch from SMS to WhatsApp to send and receive messages, pictures, audio notes, and video messages. First year FREE!] ($1.99/year after)
Explore freeware Windows Phone 7 apps for your HTC, Samsung, LG or Nokia WP7 phone. Download games, social apps and tools for your HD7, Mozart, Trophy, Omnia 7, Focus, Quantum, Optimus, Nokia Lumia 710 and Lumia 800 windows 7 phones.