Links

Site Description
BlenderNation A news site and forum dedicated to the open source 3D content creation suite, Blender.
DeviantArt Probably the biggest art community on the web.
OpenArena An Open Source first person shooter based on the Quake 3 engine.
The-Blueprints.com Free blueprints for various cars, planes, military vehicles, etc.
WikiWorlds A site similar to this one that archives 3D models, maps, and audio.