This is a little plug for a new blog called Autodesk Explorer. Its still in its infancy, but if you are anything like me, you will want to add this to your extensive Revit blog reading list. There was a good tip on finding warning related objects in 3D wireframe mode:
Autodesk Explorer: Warnings, Warnings & More Warnings
If you would like to see a list of blogs I follow (with current posts), head over to:
Revit Professionals (aka Revit Blog Directory)