content: This app is hard to review as it does so much. Some things it does well others are buggy. IM is definitely an improvement over SfB. Presence is buggy. Either not showing the right status for your contacts or not updating your presence correctly. Theres also bug when missed calls come in when the phone is locked. It will leave the receiving call screen up and keep the phone awake after the call is missed. Its a security issue as well as the phone can remain unlocked after this. Its a big annoyance and battery drain.