Brainstorming is one of the most usefull marketing methods. First time it was realized in USA in 1938. Creator of this method Alex Osborn came out from this premises: people many ideas don´t tell, because they are afraid of that these ideas are impossible, crazy, bad, comic, they aren´t accorded with things written in the school books, with things represented by authorities, with things which are conventional. They don´t want to fall into ridicule, or show as stupid or unpractical human beings. But this isn´t helpfull for creativity, and that´s why it´s needfull to overcome social and mental bariers, which stops creation of new, untraditional, original ideas.