Often times you have a contact in your Address Book and you aren’t sure whether it’s a good time to call them. With WhatsApp, the question “What’s up” gets answered before you decide, so you know if it’s a good time.
Ideally, this system would be built into the BlackBerry Address Book, but for now we have a free app that works with others who have also downloaded the app. The app only gets better as more people use it, so consider using the “Tell a Friend” feature. It’s free so why not?
Download WhatsApp for free OTA by visiting http://www.whatsapp.com/bb/ from your BlackBerry Browser.
UPDATE: App World is having some issues today, but users can download from GetJar and there shouldn’t be any problem.