I don’t use Live Messenger as my primary chat client, but I have some contacts there as well and I log in almost everyday. This new app would surely make it easier to stay connected my Live list without the need to buy IM+, BeeJive or other paid multi-chat app.
The app is not yet iOS4 nor iPad ready. there are also complaints about non-installation on some countries due to Microsoft’s restrictions. To solve that, register your Live account using a US address.