"Get WhatsApp Messenger for HTC Windows Mobile 6.1 for free! Chat, call, and share with friends and family now!"
"WhatsApp Messenger is now available for your HTC Windows Mobile 6.1 device! Download the app for free and enjoy unlimited messaging, voice and video calls, and file sharing with your loved ones. Compatible with HTC devices running Windows Mobile 6.1." whatsapp messengercab for htc windows mobile 61 free
Here are a few variations: