Typically someone posts a SketchUp model, or links to a model on the 3D Warehouse and lots of SketchUp users offer their suggestions on how to render it.
Here is one sample - a model of a bathroom which inspired renderings by several users.
Rendered using IRender nXt |
Rendered by Gaius |
Take a look at the full SketchUcation thread to see more samples:
You can also visit SketchUpRendering.com or the SketchUp Rendering group on LinkedIn