Idea Generation

It is a method of shared problem solving in which all members of a group spontaneously contribute ideas. It is a similar process undertaken by a person to solve a problem by rapidly generating a variety of possible solutions.
By doing brain storming you can generate ideas. As idea-generating technique often used in advertising by a creative team to spark creativity. The team will gather in a group and throw out spontaneous ideas without evaluation until they hit upon something that may be useful. In this process nothing is too silly or farfetched to be suggested. The process helps to make the leap from the visualization of an idea to the concrete words and pictures that will actually form the basis of the advertising campaign.

Look at this video it is about idea generation.

http://www.5min.com/Video/Brainstorming-Before-a-Public-Speech-169082868