Update: Minor updates for the local meego meetup.
How do you make your QML based applications automatically scalable to different platforms, yet pixel-perfect finetunable when needed. We used this approach for the first real application that works and looks good on Symbian, MeeGo/Harmattan and Android:
This is presentation from the 2nd Tampere Barcamp http://barcamp.org/w/page/39167337/BarCampTampere2 and may mean not too much for you if you haven't been present live.
More material like this can be found at http://agilesoftwaredevelopment.com/tags/qml