This is a good development from the original nokia chat / Ovi Contacts, but still has work to be done:

1.- When is going to be file/photos/voice clips sending available?
2.- Great thing to have yahoo and gtalk. Of course everybody is waiting for hotmail, facebook, twitter, and any other service. But, since you are launching it on the E-Series phones, consider to let the user add jabber accounts, and sell it as characteristic for enterprises.
3.- Settings. No access point config?, and the program doesn't choose automaticly either. The program should have a conection set of settings as good as the Nokia Messaging Email has. I know a have written this before, but it is because i don't get why you don't make it easier and less verbose at the application start.
4.- Make it a little faster when it is getting connected.

Vitaliano G.