Special Folders

There are several folder names that Unity has specific uses for. Unless you are using these folders for their specific purpose, you should avoid using their names. Their names are:

Editor

Editor Default Resources

Gizmos

Plugins

Resources

Standard Assets

WebPlayerTemplates

I was once working on a strategy game that had different types of resources in it, and I tried to keep their scripts, models, etc. in a "Resources" folder. You can imagine my confusion when things weren't working as I thought they would!