Harry Note - What's App is a company that Facebook bought for $19 Billion. Can you believe a company of 55 people for $19 BILLION! I think the price was insane - but it is free to use. You can send text messages - pictures - video - for free.
Their Text -
I just downloaded WhatsApp Messenger on my iPhone.
It is a Smartphone Messenger that replaces SMS. This app even lets me send pictures, video and other multimedia!
WhatsApp Messenger is available for iPhone, Android, Nokia, BlackBerry and Windows Phone. There's no PIN or username to remember - it works just like SMS but uses your Internet data plan.
Get it now from http://www.whatsapp.com/download/ and say good-bye to SMS.