WhatsApp, the very popular and long-awaited group messaging client has now become available in the Windows Phone 7 Marketplace.
Unfortunately the app will not install for me yet, saying I do not have permission, but readers can try their luck at this URL here.
Thanks to our anonymous tipster.
The app is available only to the beta testers. However the XAP file is available for download. If you have a developer unlocked device, you may give it a try. Its just a simple app similar to Kik messenger for now.