We decided to shine some light on how you can optimize your buildings while still keeping them looking good, so we now present the Modeling for Real-Time 3D guide. All the techniques listed here were used to model the Office Building and Jukebox Shopping Mall sample buildings.
We've also added a COLLADA Guide which will give you a clearer picture of the modeling workflow, and how to get your 3D models from your modeling package to our Building Composer tool. You can also check the list of known COLLADA exporter bugs and workarounds on our user forum.
As always, do give us your feedback.