hmpf, finally someone who thinks exactly the same way as i am.
But I dont think you can port the BBM. But , Whatsapp or PinChat! could be possible..

here is a mail btw i sended 2 whatsapp;

Me->
Hi whatsapp,

is it possible that you port the whatsapp application in QT? Symbian^3 is coming out, also Meego of moblin and nokia, en there are many n900 users with maemo.

All those operating systems are running QT. Its just an idea?

I would very preciate it if you take action.

With kind regards,


maemo/Android/meego user




Answer;

QT is under consideration for 2011. We want to support as many phones as possible and we understand that QT is pretty rich in experience.

Hope this helps,

--b


So maybe if OP contact Whatsapp about it. There could be a way to port it