For me, Flickr has become an indispensable digital brainstorming tool.
Each time we start a new project, or begin the idiation on a new pitch, I enter various keywords relating to the project into Flickr.
What Flickr gives you is a behind-the-scenes look at how everyday people from all over the world are interpreting those concepts, words, and places visually through photography.
Many times going through the photographs, a creative idea will be sparked.
Try it.