It's my great pleasure to announce the launch of the Official Google SketchUp Blog. Fast-breaking news, tips and tricks, user stories and just the right amount of office intrigue await anyone who pays us a visit. Also, sexy mustache contests.

For those of you who have no idea what SketchUp is, I'll start at the beginning: The world is three-dimensional. Designing a house, building a piece of furniture and navigating through a city all involve three-dimensional decisions. SketchUp is 3D modeling software that anyone can use to build models of whatever they like.

Check out the 3D Warehouse to see models from people all over the world, and turn on the 3D Warehouse layer in Google Earth to explore cities with realistic 3D buildings made in SketchUp (Denver is particularly impressive). If you like, you can download the free version and start building models yourself.