Correct brief. The more accurate, specific and complete the reference is, the more qualitative and relevant offers is provided by the agencies. We recommended to use standard paragraphs of brief, supplemented with specific comments and to avoid generalizations. For example, segmentation of the target audience should be done not only by age, gender or position, but by a more detailed portrait, including the needs, fears and desires of the target audience, typical problems related to the specifics of the work, etc.