Just a concept design for Windows Live Messenger for iPad. It is a bit strange to see that there isn't any official/great third party app for Windows Live Messenger, therefore I just design this concept UI for the app.
The main focus of the design is thumb-friendly feature, where the user is able to handle their conversation only with their thumbs, most of the time. Imagine that you are holding your iPad with two hands, with the split keyboard available, you can initiate new chat, switch chat space, share photo etc. just with your thumbs.